You can leave that heavy suitcase for another time because you won't need to take very much to the hotel. You'll probably spend a lot of time in a fluffy bathrobe and slippers, but these are typically supplied to guests by the resort. If you hope to go for a swim or participate in some water-based activities, pack your swimming suit and spare clothes. Loose-fitting garments are ideal. Contemplating taking a fitness class? Bring some sports gear and your trusty trainers. Oh, and remember your toiletries!