The worst place I've ever been stuck was on Splash Mountain. It was at the end of the ride where the logs are returning to the loading platform, where you're surrounded by rock on both sides. We were there for 35-45 minutes. There was nothing to look at and we could hear the MSEP, which we had intended to watch, going on right on the other side of the rock, but we couldn't see a thing (except some reflections of light). Sitting in the dark, soaking wet in a stinky log is not a lot of fun. We had also just (2 rides earlier) gotten stuck on POC for 20 minutes.
A couple of logs back, there was a man with his daughter, who was probably 3 or 4-years-old, and she started to cry after a while. Eventually, he started to disembark (there was a path that seemed to lead back to the loading station to the left of the logs), but as he had one leg out the log (and his daughter in his arms), the ride started to move. Fortunately, it went so slowly that he was able to hop back in and neither of them were hurt. While it was a dumb thing to do (no question), Disney had made the "we're about to start moving" announcement so many times that it became a case of the boy who cried wolf.
A couple of logs back, there was a man with his daughter, who was probably 3 or 4-years-old, and she started to cry after a while. Eventually, he started to disembark (there was a path that seemed to lead back to the loading station to the left of the logs), but as he had one leg out the log (and his daughter in his arms), the ride started to move. Fortunately, it went so slowly that he was able to hop back in and neither of them were hurt. While it was a dumb thing to do (no question), Disney had made the "we're about to start moving" announcement so many times that it became a case of the boy who cried wolf.