Pop Warner SuperBowl week is usually first or second week of Dec. I would guess next year will be Dec 5 -11. The groups stay at values and moderates usually. You can definitly count on them being in AS, PO. I think CBR had some this year as well. Figure they will put some in Pop Century too.
If planning for next Dec, I would try for the following week if you can. Otherwise, all value resorts are fair game for big groups. The only moderate that I haven't heard about hosting a Pop Warner group is CSR. And I think the Pop Warner groups would be few staying at the deluxe resorts. Hope this helps!