We've been there quite a few years at Pop Warner time. As far as the parks we didn't notice them at all. MGM was closed early one night for them. We stay at Boardwalk or Wilderness Lodge and have never seen any of the players or cheerleaders there. Last year our flight arrived the same time as a huge, huge group the ME line was crazy. After a couple minutes the ME CM's made a separate line for Pop Warner to check in. That cut the line by 75% and we were on our way very quickly.