Pop Warner REALLY is a NON issue! I'm Childless by Choice and I have at least 6 stays in December in the *same* resort as PW. I find the kids very well behaved and chaperoned.
Yes, it makes the food courts more busy, but nothing horrible.
NOW, the cheer competitions (NOT PW) in late April/early May are another matter entirely..... loud cheering on the grounds. Security had to come to the rooms around me every night. Very self focused and rather obnoxious--the kids AND the moms. I was also taken aback at how scantily clad (minimal sports bra and SHORT spanx) the younger girls were in the food courts (of course, WITH the moms).