We went the week before Thanksgiving week last year. IT WAS WONDERFUL! The weather was perfect...we wore shorts and T-shirts during the day and took a sweatshirt for the evenings. Also, the crowds were low. We walked on to most things, but if there was a line, we used fastpass and got right on at our designated time. We were able to see and do soooo much.
Hope this helps.
Bobbi