I wouldnt plan my vacation around either group...Mousefest are some of the best and most considerate people and are grat to be in the parks with...as a matter of fact you will not even notice them as they tend to spen certain times at certain parks or resorts...As for Pop Warner which is usually the 2nd full week....they are not a major issue either...we have been the last 2 years same as pop warner and not had any major propblem....couple slight bumps....one small group of disrespectful pre teens at MGM and once in a while a groupf of young girls break into squeals....pre teens being pre teens....but usually you dont notice them...its not gonna add a major crowd to any one park there attendance is random I believe and they spend alot of time practicing and playing there games at the sport complex....I would avoid MGM the friday of Pop Warner week that is the only day to plan around they have a special event for POP that night and close the park a littl early but a lot of the people got a head start and by 2 pm it was packed