First...grad a golf cart rental to get around (although you can walk...most everything is near the dock)...the cool stuff it was easier for us to grab the golf cart (one of those modern space ship looking things).
If you have a golf cart...you can head over to turtle Krawl...a small turtle museum is there...and a great bar/restaurant.
Also, head over to...and the name is escaping me right now...there is a place..looks like a junk pile from the outside..it is actually a restaurant with the best fresh fish sandwich you will ever have. You can also get conch fritters...they are very good also. Someone here should remember the name..or it will come to me and I will post...BO's fish wagon maybe...someone here should be able to confirm
There is plenty of shopping, nice little bars along the way...don't forget to stop at sloppy joes, there is a margaritaville.
You can tour hemingways house, see the 0 milemarker, stop at the southern most point of the US.
It didn't take hubby and I more than a couple hours of driving around in the cart..although, it was our second time there and he remembered some of the streets we were looking for.
We rented our golf court on corner of duval street...seems that the places are all connected. They were great. We orginally did the rental for like 4 hours or something. getting done early was no problem, they just crossed out the time, put in the two hours and only charged us for that. Very impressive, since we were tourists and all.
Also, the kino sandal shop...leather sandals for $8, very nice...many styles for men, women and children. A cigar shop is also near there, a favorite place for hubby to stop.