Those first 2 weeks of December are the absolute slowest times for us it seems, although with the park incentives they offer during that time period there’s always a crowd of sorts.
Good rule of thumb is to ALWAYS expect a crowd somewhere. This is the number vacation spot on the PLANET. We are always entertaining people from all over, and the attendance has been completely through the roof this year, even during the slow season.
Should be fine during that week, but don’t be surprised if you find yourself ever having to wait lol