Hi there, Ashley!
The week right before Thanksgiving - and Thanksgiving week - are both equivalent to peak Spring Break time at the Walt Disney World Parks and Resort.
If possible, and you can come after Thanksgiving and stay past that weekend, I think you'll find much lighter crowds (and gorgeous weather).
Typically, because the crowd levels are high during this time of the year, Disney does not offer much in the way of premier specials (like free dining, for example). You'll find some discounts at REsort hotels, but those will be announced later on in the year,
Keep a close eye on both the
Walt Disney World Parks and Resort official Web site and make sure to subscribe to the
Disney Parks Blog. These are the resources that will provide you with the most up-to-date information reasonably close to when it has been released.
Have a wonderful trip!
See you later, celebrator,
-Deborah B.