If you decide out, the FTC suggests you send a letter by means of qualified mail or hand-delivered with a signed receipt. In addition, make certain to keep records of any correspondence and who you talked with, the FTC says. If you want 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 popular where you'll need to pay additional membership and exchange costs. And even then, you're not guaranteed of getting the exchange you want. Even reserving time at your own timeshare can be tough since lots of timeshare resorts are moving away from fixed times.