yeah I was like nineteen when I stayed there don't remember to much except I did alot of partying.
thirty6- I realy depends on what you plan on doing and where it is. Did you want to check out the other islands too? Maraton has a nice beach. Duval has alot of resturants, and giftshops, I think they still have scooter rentals too. I know theres a trolly tour you can take of the island. There is a couple really nice parks, and museums. You have alot of options, fishing, sunset boat rides, key west tour(by trolly), dolphin encounters, snorkeling, parks and preserves, museums, parasailing, skydiving, or just relaxing at the beach, and then you can crusie the party scence on duval at night if you want.
Ohh and Watch out for key deer! Obey the speed limit. They will give you a ticket in a heartbeat.