1) Two years ago, they had to close the POFQ pool at approx 1:15am.
2) The Pop Warner kids were almost destroying it.
3) They also caused more than $10k in damage at All Star Sports.
4) The Pop kids don't influence park attendance that much.
5) But, they really upset the resorts where they stay.
NOTE: To play in the Pop Warner tourney, the players MUST stay at WDW. It is in the contract between the league and WDW. In many cases the chaperons are not actually controlling the kids, so they run pretty much wild at the resorts.