A week in Orlando and I've seen two rides breakdown, both at SeaWorld. The car I was in on Antarctica: Empire of the Penguin failed, didn't rotate then refused to enter the station, leaving us strapped into the car in a 0c room for 15 minutes (yay unexpected issue with a trackless dark ride). Whilst Infinity Falls did a full shut down and had to dump all its water out of the ride system, with people evacuated from the lift hill.
Meanwhile across both parks, every train had pretty much every seat full with the use of regular, paid fastrack and single rider lines. None of the Horror Nights mazes had downtime, and with HHN at capacity a couple of times, I saw security talking with just one group the entire time I was there.
I suspect my week at Disney might be a little different in terms of ride availability. There are going to be rolling storms pretty much every afternoon, as regular Florida weather resumes.