I'm not suer there is any time at WDW anymore that is just way, way less crowded. Hubby and I used to go almost every year the week after NYE, and the parks would be VACANT--no lines, nothing. We got very spoiled. 5 years ago we started noticing less and less of a difference. I was there twice during value seasons last year and it was amazingly crowded (from my perspective.) I've been several tiems during Pop Warner and it has not been an issue and we were in values and are childless by choice. I would go first week in December.