Leave that big, bulky suitcase for another time because you won't need to bring much with you at all. You'll likely spend quite a lot of time lounging in a fluffy bathrobe and slippers, but these are typically supplied by the resort. If you want to go for a splash around in the pool or participate in some relaxing aquatic activities, pack your swimming suit and extra clothes. Loose-fitting garments are encouraged. Contemplating using the exercise facilities? Bring some sports gear and quality trainers. Oh, and don't forget your toiletries!