If you plan to camp, you must bring your own gear or buy it here -- no one on Oahu rents out gear. You can buy gear at Tents and Events, 94-158 Leole St. (from H-2 take the 2nd Waipahu exit, then at the 1st light, make a right onto Leole St.), Waipahu (tel. 808/677-8785). If you bring your own equipment, remember that you can't transport fuel (even in a canister) on the plane. If your camping stove requires butane fuel, just leave it at home; butane is very difficult to find in Hawaii.

The best places to camp on Oahu are listed below. TheBus's Circle Island route can get you to or near all these sites, but remember: On TheBus, you're allowed only one bag, which has to fit under the seat. If you have more gear, you're going to have to drive or take a cab.

Note: Reservations for all state parks on the island of Oahu cannot be made more than 30 days in advance. To make a reservation, send a letter of request stating the park, dates, identification numbers (driver's license, passport, or state ID) for all adults, head count of the minors, and your payment of $5 per night per site (each site holds 10 people). Payment can be made with a money order, cashier's check, or traveler's check. Although information is available on the Department of Land and Natural Resources' website, you cannot apply for permits online.