My DH and I are also arriving the Saturday after Thanksgiving! I've been to WDW many many times, but never during the holidays. There was a show on Travel Channel that inspired me (not that I needed much persuasion) to book our vacation (DH's first trip to Disney!) at WDW. I'm so excited, I can hardly stand it, and I'm driving DH CRAAAAZY!! We're staying at POR...keep an eye on Mousesavers.com around June/July, they should be running codes for the holiday season around then..Maybe you can get a good rate at an AS and stay on-site.
Happy planning!