we have gone to disney 3 times during popwarner week. it is never a problem with crowds, once in a while you might bump into the kids at the parks, but they generally do not make the lines long. and about the xmas party, we only did this once, it was 6 years ago, i do not recall any popwarner kids, but i do remember it was very crowded. it was also a lot of fun, snoww on main street so neat. hope i helped. have fun.