Hike through the woods looking for geckos, or Glassbottom boat/snorkel trip, all at John Pennekamp Park:
Watch for late night saltwater crocs swimmming past Gilberts while grooving to live rock banks under the floodlit coconut trees.
Fly fishing trip on the flats, float plane over the shallows to see all the sharks, eat at the world famous Fish House.
Now you are all set. <gg>