Leave that massive suitcase at home because you won't need to take much with you to the hotel. You'll probably spend a lot of time dressed in slippers and a plush bathrobe, but usually these are provided to guests by the resort. If you're planning to go for a swim or engage in some aquatic activities, pack a swimsuit and another set of clothes. Casual, non-restrictive garments are best. Considering using the exercise facilities? Bring workout gear and quality trainers. Oh, and remember to take your toiletries and other essential items.