You can leave that bulky suitcase at home because you won't need to take much with you to the hotel. You'll likely spend quite a lot of time lazing around in a bathrobe and slippers, but these are typically provided by the resort. If you're planning to go for a swim or take part in some aquatic activities, pack your swimming suit and a spare set of clothes. Casual, loose-fitting garments are ideal. Contemplating taking an exercise class? Bring workout gear and a pair of comfy trainers. Oh, and remember your toiletries and other personal belongings.