It is a little bit Disney's fault. Every time, for the past few years or so, I've done any kind of show the guests are told to move all the way forward, allow no space around you, please move all the way forward filling in all the spots. It is wall to wall people, and it's not pretty! Then, particularly with Philharmagic, as people arrive a bit later, they are allowed to just stay over to the right, not shoving up to the front.
I prefer to hang back a bit, not be in that first miserable crunch through the doors. And if it's crowded, and CMs are telling everyone to move all the way down, yet some guests feel that doesn't apply to them, and plop down smack dab in the middle of the row? Sorry but their feet are going to get trampled. I very nicely say excuse me, but this wouldn't have happened if you had moved all the way down.
Haunted Mansion? If I'm not right at the door when it opens, I wait until the stretching room is close to empty. Otherwise, it's really hard to stay with anyone.