You can leave that bulky suitcase at home because you won't need to bring much with you at all. You'll likely spend a decent amount of time in a bathrobe and slippers, but these are often issued to guests at the resort. If you're planning to go for a splash around in the pool or join in on some water-based activities, pack your bathing suit and a spare set of clothes. Casual, loose-fitting garments are best. Thinking about using the exercise facilities? Bring sportswear and your trusty trainers. Oh, and remember your toiletries and other personal items!