PACK LIGHTLY, COOL, AND CASUAL. You won't need nylons or neckties. Pants or casual dresses are fine for restaurants. Don't bother with rain gear. Any showers are usually short. You dry off quickly. The rule of packing for Hawaii is: "If in doubt, leave it out!" DO PACK your driver's license, credit card, ATM card, plane tickets, hotel and car rental papers. Bring your Safeway and Blockbuster cards and a calling card if you plan to make long distance calls.
Bring (or buy there) your favorite sunscreen. Insect repellent is smart to have for jungle hikes. Sunglasses and a visor/hat are good items to pack. Don't forget your camera! Please remember NOT to carry scissors, knives, knitting needles, glass bottles, etc. in your carry-on luggage. The airlines are confiscating all of these items. If you need these items at your final destination, please pack them inside your checked luggage.