Leave that massive suitcase for another trip because you won't need to bring much to the hotel. You'll likely spend a decent amount of time dressed in toweling slippers and a robe, but these are often issued to guests at the resort. If you want to go for a dip in the pool and hot tub or involve yourself in some aquatic activities, pack your swimming suit and a change of clothes. Casual, non-restrictive garments are a good choice. Thinking about using the exercise facilities? Bring some sports gear and quality trainers. Oh, and don't forget your toiletries and other personal items!