If you pull out, the FTC advises you send a letter via certified mail or hand-delivered with a signed invoice. In addition, make sure to keep records of any correspondence and who you talked with, the FTC states. If you want to trade to another resort, you need to understand how to do so.Otherwise, you'll need to go through an exchange company RCI is the most popular where you'll need to pay additional membership and exchange fees. And even then, you're not ensured of getting the exchange you desire. Even booking time at your own timeshare can be tough because numerous timeshare resorts are moving away from fixed times.