Just got home last night (left 79 to return to 19 degrees and snow). I was at Pop for 3 nights and the BWV for 6 nights.
1. YES, you can use RAC at Pop, it is listed on the flyer in your room.
2. No, you can not use it at any other resort except the value resorts. (It is NOT listed on the flyer at other resorts, only at the value resorts.) I asked yesterday at BWV if they knew when the other resorts would be added and they said they have no idea when they will be added. (When we were there in December, the BAGs rep seemed to think it would be soon, so this was a more uncertain idea now and didn't sound like it would be anytime soon -- which makes me glad I switched my SW March flight home to Jetblue home.)