There are so many things to do on the island including boat rentals, parasailing, sunset cruises, fishing charters, dolphin tours, golf cart rentals etc. This website has many of these activities and their contact information.

If you want to do some more research, join this group on Facebook. There are over 200k members and offer good information for local things to do on the island as well as places to eat etc.

Historic Bridge St. has dining, shopping, and activities.

TripAdvisors top list of things to do in the area.