Hawai'i is casual: sandals, bathing suits, and comfortable, informal clothing are the norm. In summer synthetic slacks and shirts, although easy to care for, can be uncomfortably warm.
Probably the most important thing to tuck into your suitcase is sunscreen. This is the tropics, and the ultraviolet rays are powerful, even on overcast days. Doctors advise putting on sunscreen when you get up in the morning, whether it's cloudy or sunny. Don't forget to reapply sunscreen periodically during the day, since perspiration can wash it away. Consider using sunscreens with a sun protection factor (SPF) of 15 or higher. There are many tanning oils on the market in Hawai'i, including coconut and kukui (the nut from a local tree) oils, but they can cause severe burns. Too many Hawaiian vacations have been spoiled by sunburn and even sun poisoning. Hats and sunglasses offer important sun protection, too. Both are easy to find in island shops, but if you already have a favorite packable hat or sun visor, bring it with you, and don't forget to wear it. All major hotels in Hawai'i provide beach towels.
As for clothing in the Hawaiian Islands, there's a saying that when a man wears a suit during the day, he's either going for a loan or he's a lawyer trying a case. Only a few upscale restaurants require a jacket for dinner. The aloha shirt is accepted dress in Hawai'i for business and most social occasions. Shorts are acceptable daytime attire, along with a T-shirt or polo shirt. There's no need to buy expensive sandals on the mainland -- here you can get flip-flops for a couple of dollars and off-brand sandals for $20. Golfers should remember that many courses have dress codes requiring a collared shirt; call courses you're interested in for details. If you're not prepared, you can pick up appropriate clothing at resort pro shops. If you're visiting in winter, bring a sweater or light- to medium-weight jacket. A polar fleece pullover is ideal, and makes a great impromptu pillow.
If your vacation plans include Hilo, especially during the spring and winter months, you'll want to pack a folding umbrella and light raincoat. And if you'll be exploring Hawai'i Volcanoes National Park, make sure you pack appropriately as weather ranges from hot and dry along the shore to cool and rainy at the summit. Good boots are recommended if you'll be hiking or camping in the Park.
Imagine globetrotting with only a carry-on in tow. Shipping your luggage in advance via an air-freight service is a great way to cut down on backaches, hassles, and stress -- especially if your packing list includes strollers, car-seats, etc. There are some things to be aware of, though. First, research carry-on restrictions; if you absolutely need something that isn't practical to ship and isn't allowed in carry-ons, this strategy isn't for you.
Second, allow two to three business days to send your bags to the Big Island. Third, plan to spend some money: it will cost at least $100 to send a small piece of luggage, golf bag, or pair of skis to the Big Island. Some people use Federal Express to ship their bags, but this can cost even more than air-freight services. All these services insure your bag (for most, the limit is $1,000, but you should verify that amount); you can, however, purchase additional insurance for $0.50-$1 per $100 of value.
Luggage Concierge (800/288-9818. www.luggageconcierge.com). Luggage Express (866/744-7224. www.usxpluggageexpress.com). Luggage Free (800/361-6871. www.luggagefree.com). Sports Express (800/357-4174. www.sportsexpress.com) specializes in shipping golf clubs and other sports equipment. Virtual Bellhop (877/235-5467. www.virtualbellhop.com).