I couldn't agree more with the answer above.
Absolutely. You have nothing to lose and everything to gain. Join groups, intramural sports, greek, and/or clubs that interest you.
I got involved in many things during my college experience. I joined clubs, did intramural sports, greek life and got involved with volunteer work on campus. I loved it. I believe your experience is what you make of it. The more you get involved with the more well rounded you become, and I also feel that it helps you network. I wouldn't purely do something for the later pay off but rather the here and now. You will be in new environment and probably won't know a lot of people, why not join and get involved on campus to meet people and make friends. You should do what interests you and make the very best memories doing it! You need outlets from books and classes.
I wish you the very best, and congratulations on your acceptance into Florida!