I would think the week when Pop Warner is there it tends to be more crowded. Plus, with how Thanksgiving falls, there is an extra week in there compared to the past couple years. It is hard to tell which one will be more crowded. We go every year on Thanksgiving Day and stay for 11 days. When those eleven days fall later into December it is much more crowded. When they fall mostly in November, like this year, it tends to be a little less crowded.
That being said, this past year, the crowds seem to be larger -- so I'm not sure anyone really knows.