Just FYI Rushkan,
Realtors can't help you sell timeshares as you only own a week or ? of 52 weeks. Just to let you know there isn't a big market for timeshare resales either, so be prepared to take whatever you can get. Although it's good that you can use RCI to use anywhere in the world, it also costs extra money over and above the timeshare, then there are taxes and other expenses to pay so it's not the greatest investment. Your best bet is to try to sell back to the people you bought it from. There is also a Century 21 timeshare resale company you could check with. Google timeshare resales in Florida and see what you come up with.
I wish I had better news for you, good luck!