You should plan to bring a carry-on bag with all important documents (a valid passport, airline e-ticket, insurance card, and The S-Trip! Code signed by you and your parent/guardian), a days worth of extra clothes, and something to keep you entertained like a book, music, a deck of cards, etc. Remember no liquids over 100mL.
In your checked luggage, remember that you do NOT need to pack your whole closet. Lots of bathing suits, board shorts, T's, underwear, and a sweater will do. Don't forget your theme night swag, toiletries, and of course, sunscreen!
Travelers should be aware of standard airline limitations of 20-25kg per bag for each passenger. To make traveling in and out of hotels and between different forms of transportation easier, we recommend traveling with one suitcase per passenger.
Check out our blog! www.s-trip.com/blog/s-trip-reviews-top-13-things-to-pack/ for more ideas.
Pack like a pro and shop our Ultimate Traveler Kit here: http://s-trip.com/store/.