I understand the need for preshows and I do enjoy them. My complaint is more related to the way Disney does child swap vs UOR. Having a kid have to wait the duration of a line, preshows, the ride, express line, preshows, and ride is a little much.
I guess the differences are that at Disney they aren't trapped in the little fish tank or have to go through some potentially spooky stuff, but its so more efficient to have the fish tank.