I had an October reservation for my home resort (BLT) but actually wanted Wilderness. Three (consecutive) of the 4 nights I wanted were available at WL. Being inexperienced with waitlists, I called MS to get one set up, and the cast member actually recommended that since I had enough points, I book the 3 nights at WL, set up a waitlist for the 4th night, and keep the BLT reservation until I decided what to do. Waitlist for WL came through in about 2 weeks and I cancelled the BLT.