I found the way they do it at Haunted Mansion a ridiculous waste of time. You go in, do the stretching room, come out again, turn right, wait ages for someone to come and escort you through - to the exit and you then walk back in again! It would have been quicker if I'd parked up at the exit first and gone in on my walking stick! (except I stupidly left it in the hotel room that day!)
Most queues I'm fine with - except those on a slope, especially Test Track. It's because as soon as I pull the tiller back the
scooter slips backwards a few inches. Terrifies the life out of me!
In general, the biggest problem I'm finding is people who blithely just walk in front of you even though you're actually inches from the ride entrance. DD has shouted at more people "get out of the way: it's a moving vehicle!". So embarrassing.
Basically, though, I'm using both OH and DD as outriders to stop people pushing in front of me. Trouble is, you give way for a stroller which is mostly in front, and everyone thinks it's okay to push in front of you.