If you decide out, the FTC advises you send out a letter through certified mail or hand-delivered with a signed receipt. In addition, be sure to keep records of any correspondence and who you talked with, the FTC states. If you wish to trade to another resort, you have to know how to do so.Otherwise, you'll need to go through an exchange company RCI is the most prominent where you'll have to pay additional subscription and exchange charges. And even then, you're not ensured of getting the exchange you desire. Even booking time at your own timeshare can be challenging because numerous timeshare resorts are moving far from set times.