Each room actually has several of the same room. If one is too full, you get directed to another. In advanced mode, you can choose exactly which room you want.
I find the Advance Mode very useful when I want to get my credits from the Music Game. I can choose a room that is empty and not have to wait in a line to play my song.
I find the Advance Mode very useful when I want to get my credits from the Music Game. I can choose a room that is empty and not have to wait in a line to play my song.