Lunch is included...the main extras are alcoholic drinks (not sure about soda), flotation mats or innertubes (although you can bring your own cheapies and use a vest for free) and snorkeling equipment (although you can bring your own mask/fins and use a vest for free). There are also various free games at Castaway Joo's/Grouper Game Room. Hammocks can be a challenge, although if you walk all the way to the end of the family beach, there are three or four that usually remain vacant much later than the others. Chairs are no problem, and there are lots of umbrellas, especially if you are willing to walk a little ways. The photographers will be out for photos, so that would be an extra too if you decide to purchase them.
Barb