When Geoff and Barry get to the basement from the living room to confront Erica about kicking the new band member out of the group, they are wearing different shirts than they were when they left the living room.
The drive-in theater portrayed at the end looks more like a used car lot. Cars in drive-in's were parked in lines of line-a-breast cars (40 to 50 cars in a curved line.
This representation has on rows for cars drive in to get to the spot they want to watch movie from.
It's just a parking lot with speaker stands by each car.
Worst representation of a drive-in I've ever seen.