Florida is really nice in the fall, because it's not so hot you're sweltering, but it's not so cold you can't go to the beach. My favorite place to go in Florida is St. Augustine. You won't find a better mix of History and relaxation. -snip-
If you are planning a trip to Florida you really should check out St. Augustine, it's a great place to see the "real" Florida.
No matter where you decide to go have fun and be safe!
[ Edit: Sorry, no promos please. ]