I'm not surprised. We love going over Thanksgiving. It's fun to go the weekend before and stay through to the next weekend. We find crowds don't pick up until about Tuesday.
At one time I thought it would be great going over Thanksgiving, but we've since found cabins in the Smokies that allow dogs, so that's where our family heads now!
We're staying 9 nights starting the Thursday before and when I tried switching the last 4 nights to a different resort right at the 7 month mark, all the 2 bdrm were booked as well. We're on a WL for AKV because my kids want to try it, but I'm not holding my breath. I knew this would be a popular time, but how quickly all the rooms went surprised me. Glad we booked at 11 mo. I would keep checking back or even WL OKW or SSR. Good luck!