A few things to do are definitely see World Wide Sportsman (Ernest Hemingway's boat inside, or at least a replica) Its awesome. As for feeding the tarpon, there is quite a few marinas that have resident hand fed tarpon so definitely check that out. As for sideshows homophobic comment, if you stay south of Wendy's (yeah the fast food joint) you will be fine but if you go past there, it is pretty much rainbow road, but Duval St. in Key West is so much fun you will have a hard time doing anything early the next day. If you are tent camping I would plan on being hot, real hot. Not much wind for some reason most of the time and it is pretty brutal but a fan of some sort would make it tolerable, sort of. If you are thinking beach, think again, there is really no beach to speak of, unless a resort/hotel has made one. there are lots of places to snorkel by pulling off of the road and just jumping in and the lobster are plentiful, just know your regulations and make sure you have a dive flag and bring your license for all of the species you are targeting...there are a lot of FWC and they give a lot of citations the first few weeks of lobster season. The only place I have alot of experience with is Key West, so I cant give you much more other than this, but Hookthis1 is right the John Pennecamp reef is amazing but there is no spearfishing or lobstering there, just for the "pretty", and Looe Key is the same, amazing sights and wildlife but no harvesting at all. You will have a blast, just relax down there, everyone else does...enjoy and let us know how you did and how much you liked it.