I've gone that week many times, crowds aren't bad. One thing to watch for is days that there is a Christmas party at MK. I've found those are perfect days to go in the morning & afternoon, people avoid it because of the early close. On the other hand, non-party days are very crowded. It's also Pop Warner week, you will see small groups of players/cheerleaders around the park. DHS usually closes early on Wednesday for their private party. Saturday night at Epcot is usually crowded.