I hate to say it but if you had a traditional wedding, it is even less time with guests as the event is just a few hours instead of a few days with guests.
My advice is to not over-plan. plan on spending many hours by the pool, on the beach, at the bar with your friends. those are the moments that you are going to remember. Also, i tell our clients to try to stay a minimum of 4 night. 3 nights is too short and you will feel rushed. 5-6 nights are better. For brides try to stay 6-7 nights so you can get most of the planning stuff out of the way before your guests get to the resort so you can spend more time with them.