9 Simple Rules Locals Wish Every Tourist Read on the Plane to Hawaii – The Last One Changes Your Whole Trip

Most tourists break at least three of these rules before they even leave the airport.

I’ve lived on Oahu for over 30 years and watched these islands change in ways that still keep me up at night. We’re not asking you to stay away. We’re asking you to come differently.

Some of these will surprise you. A couple might sting. But the last one? That’s the one that changes everything.

Your Shower Just Became Political

Water in Hawaii isn’t unlimited. It’s running out faster than anyone wants to admit.

2025 was the state’s second driest year in over a century. Average rainfall hit just 42 inches – roughly 20 inches below what’s considered normal. On Oahu alone, nine aquifer monitoring stations were flagged as dangerously low. One aquifer in Kaimuki hit critical status.

Here’s what made it real for me.

My nephew farms in Central Oahu. A few years back, his crops started dying because the water table dropped so low that seawater seeped into the soil. That freshwater his livelihood depends on? It comes from the same supply your Waikiki hotel pulls from.

And it takes 25 years for a single raindrop to travel from the sky down into Oahu’s underground aquifer. Twenty-five years. That water you’re using today started its journey before most tourists were even planning their first Hawaii trip.

• Take shorter showers
• Skip the daily towel change
• Don’t run the tap while brushing your teeth

These aren’t hotel suggestions. They’re survival strategies locals already live by.

But here’s what most people don’t realize about the parking situation.

Beach Parking Isn’t First-Come, First-Served Anymore

Starting in early 2026, Maui’s new Park Maui program will change who gets to park where and when.

Here’s how it works. At Kamaole Beach Parks I, II, and III in Kihei, residents with a Hawaii driver’s license park free. Before 10 a.m. on weekends and holidays, those lots are reserved for residents only. Visitors pay $10 per day and can only park after 10 a.m. on those days.

Why? Because local families literally can’t take their kids to their own beaches anymore.

Every spot’s gone before breakfast. Some tourists arrive at 5 a.m. to “secure” spots at places like Lanikai, treating our home like a competitive sport.

Think about what that feels like. You work two jobs, finally get a Saturday off, and can’t even park at the beach you grew up swimming at. That’s not a tourism inconvenience. That’s a community losing access to its own home.

Park only in designated areas. Never block beach access paths or driveways. If the lot’s full, pick another beach – we have dozens. The county plans to expand the program to Baldwin Beach Park, Launiupoko, and Ho’okipa after the pilot phase wraps up.

And speaking of ignoring signs…

That Closed Trail Sign Means Closed

In July 2025, an 8-year-old boy fell 20 to 40 feet down a shaft at the summit of Koko Crater Trail. He was airlifted in critical condition.

The trail was shut down immediately. Warning signs went up. Caution tape everywhere. And within days, hundreds of hikers walked right past all of it.

Photographers documented crowds stepping around barriers. One hiker told Hawaii News Now she “just talked to people around us, and there were hundreds of people up there, so we just did it.”

I’ve hiked Koko Crater dozens of times. Over 1,000 warped railroad ties up a steep crater wall. No shade, no handrails, no margin for error. The Honolulu Fire Department made 21 rescues there last year alone – more than any other trail on Oahu.

This extends to Kapu signs. When you see “Kapu” near a heiau, lava tube, or burial site, that’s not a cool photo backdrop. It’s a sacred prohibition that’s been respected for generations. Entering can be both deeply disrespectful and illegal.

Before hiking anywhere, check the DLNR website for current trail status. Not some blog post from 2019. Not a TikTok clip. If a trail’s closed, there are dozens of legal alternatives. Makapuu Lighthouse Trail gives you jaw-dropping ocean views. Diamond Head is a classic for a reason.

But the trail you choose matters less than where you spend your money. And that brings us to something that’s gutting this state.

Your Dollar Decides Who Gets to Stay

It now takes 189% of the median household income to afford a median-priced single-family home in Hawaii. The last time a family earning the median income could actually buy a house here was 2012.

Let that sink in for a second.

My neighbor’s daughter was born and raised in Kailua. Five generations deep. She’s a teacher. She just moved to Las Vegas because she got priced out. The median single-family home on Oahu hit $1.16 million in early 2025. A teacher’s salary doesn’t even come close.

After the Lahaina wildfires destroyed roughly 3,500 homes, rents on Maui spiked 50-60% for fire survivors. Many of those families left and won’t come back. Census data shows over 15,000 people left Hawaii in a single year.

Not because they wanted to. Because they couldn’t afford to stay.

Every vacation rental that could house a local family becomes another listing for tourists. Every chain restaurant that replaces a mom-and-pop spot sends profits to the mainland. It adds up fast.

Here’s what you can do about it. Eat at family-run plate lunch spots instead of the Cheesecake Factory. Buy souvenirs at farmers’ markets, not ABC Stores. My friend Keala runs a small poke shop in Kaimuki. She told me tourist dollars at locally-owned spots literally keep families housed.

For every $100 spent at a local business, roughly $68 stays in the community. At a national chain? About $43. That difference is someone’s rent.

And while we’re talking about what you bring to these islands…

That Sunscreen Might Be Illegal

Since January 1, 2021, it’s been illegal to sell sunscreen containing oxybenzone or octinoxate anywhere in Hawaii. Hawaii was the first place in the world to pass this law.

Here’s why. Those chemicals cause genetic damage to coral, trigger bleaching, and even change fish behavior. At Hanauma Bay alone, an average of 412 pounds of sunscreen gets deposited on the reef every single day.

I watched a snorkeler at Shark’s Cove last month slather on the wrong stuff right before jumping in. When I mentioned it, they said they “didn’t know.”

The law bans the sale – but you can still bring non-compliant sunscreen from the mainland. Nobody’s checking your bag at the airport. Which means it’s on you to check before you pack. Look for zinc oxide or titanium dioxide. Make sure it says “non-nano” and is paraben-free.

Or better yet, wear UV protection clothing. A rash guard does more for your skin than any spray can. Brands like Raw Love and Little Hands Hawaii make reef-safe options you can grab at island stores.

The reefs that make your vacation photos spectacular? They’re dying. And a study from Princeton found that the most photographed reefs attract the most tourists and degrade the fastest. Your presence has an impact. Make it count.

Now let me tell you about something that drives locals absolutely crazy.

The Left Lane Isn’t for Sightseeing

The Road to Hana isn’t just a tourist attraction. It’s how Maui locals get to work, school, hospitals, and the grocery store.

When tourists crawl at 15 mph in a 25 zone while filming on their phones, they’re making someone late for their kid’s daycare pickup. When they stop in the middle of the road for photos, they’re blocking an ambulance route. I’ve sat behind rental cars doing 10 mph on roads I need to actually live on.

• Pull over when locals need to pass
• Use turnouts frequently
• Don’t stop in the middle of the road for photos
• If someone’s behind you driving faster, let them by

They probably know these roads better than your GPS does.

“Drive with aloha” means patience, not entitlement. Leave early. Plan for traffic. Don’t honk except for emergencies. And please don’t park in residential driveways because you want a shorter walk to the beach.

But here’s the part that’s doing more damage than most people realize.

Your Instagram Post Has Consequences

A study published in Nature Sustainability tracked where tourists went based on geotagged Instagram photos. The pattern was devastating. The most spectacular reefs attracted the biggest crowds and were damaged the fastest.

Kaanapali Beach. Hanauma Bay. Kahaluu Bay. All heavily photographed. All showing serious stress from visitor impact.

When that wave pool opened on Oahu and filled with freshwater during a drought, it captured everything wrong with how tourism operates here. Water that could sustain a community was used to entertain tourists. The islands aren’t a backdrop – they’re somebody’s home.

Maui resident Roselani Aiwohi put it perfectly when she described tourists filming in her community and bragging they “discovered” something off the beaten path. Suddenly 50 tourists show up at a small freshwater pond. And with them comes degradation, because they don’t know how to treat the place with respect.

• Visit fewer places and spend more time at each one
• Skip the geotag on fragile locations
• Don’t trespass for photo ops

Choose experiences over images.

And when you sit down for a meal after all that exploring, there’s something you need to know.

Tipping Isn’t Optional Here

Hawaii’s cost of living runs roughly 85% above the national average. Housing costs are more than double what mainland families pay. The median family income is $123,000 – and even that barely covers the basics in Honolulu.

Your server probably works two or three jobs and still can’t afford rent. A studio apartment in Honolulu can run $1,800 or more. One-bedroom apartments in Waikiki average over $2,500. The math doesn’t work for most service workers, even with tips.

Tip 20% minimum for good service. More for exceptional experiences. Some restaurants have added service charges just so back-of-house workers can earn an extra few dollars an hour. Don’t treat service workers like theme park employees. They’re real people facing real costs you can’t imagine unless you’ve tried paying $2,600 rent on a server’s wage.

I watched a tourist argue about a tip at a local restaurant last month. The server smiled through it. But I saw her face after.

That $10 they withheld might have been her bus fare home.

All of that matters. But the next one? This is the rule that changes everything.

The Biggest Rule Nobody Talks About

Tourism needs Hawaii more than Hawaii needs tourism.

That sentence might shock you. But it’s what Native Hawaiians keep trying to tell visitors who’ll listen.

In the first nine months of 2025, over 7.2 million visitors came to these islands. That’s roughly 800,000 people per month flooding a state with about 1.4 million residents. The pressure is unsustainable.

A Native Hawaiian elder told me something I’ll never forget. “We’re not asking you not to come. We’re asking you not to come the way everyone else does.” That means choosing regenerative tourism over extractive tourism. It means volunteering with local nonprofits during your trip. It means learning actual history instead of sanitized resort versions.

• Attend community-run cultural events, not Hollywood luaus
• Visit Pu’uhonua o Honaunau National Historical Park to understand Hawaiian concepts of refuge and forgiveness
• Shop at Hilo Farmers Market and talk to the vendors

These small choices determine whether your visit depletes or replenishes.

I’ve seen the rare visitor who gets it. They ask questions. They listen. They adjust plans based on what locals need, not what their itinerary demands. They understand that malama ‘aina – caring for the land – isn’t a cute phrase for vacation photos. It’s a responsibility.

What Happens Next Is Up to You

In a 2022 survey, 70% of Hawaii residents said visitors should be encouraged to volunteer and give back during their stays.

That’s not anger. That’s an invitation.

We’re asking you to see Hawaii as a living, breathing home for real families facing real crises. Not a theme park that exists for your entertainment. When you choose shorter showers, local businesses, reef-safe sunscreen, legal trails, and genuine cultural respect, you become part of the solution.

Change even two habits from this list and locals will notice. Change all nine and you’ll experience a Hawaii most tourists never see. One where communities welcome you instead of tolerate you. Where your presence helps instead of hurts. Where you leave the islands genuinely better than you found them.

That’s the Hawaii I want my grandkids to inherit. The choice is yours.