I have stayed as ASMovies and it was just so-so for me. That was even before I stayed at Pop. I think the only time I could say I feel that Pop is crowded is at 8am in the food court, but, hey, what do you expect? Everyone needs to eat before their full days at the Park.
I don't feel that the grounds are crowded at all. I can understand what a previous posted said about concrete, there is alot of pathways and there are lesser trees but they are there. Some of the rooms facing the lake will give you a cozy and away from it all feel.
And yes, it's great that Pop is just across the bridge from AoA. We were there in June and walked over to check out AoA and ate in their food court twice. The whole resort wasn't open yet so there weren't any crowds. We had breakfast there to avoid the crowds at Pop. Might not be the same now that all the wings are opening/opened.