Seeing as most of threads on this subject are quite inactive, I thought I might get a new one started.
Here is my contribution, all from the same day at MK last March:
POTC: The ride was stopped for about 10-15 minutes. Our boat was at the section of the ride where Jack Sparrow pops up out of the barrel, and it was bumper to bumper, with the lights on. There had to be at least 4 or 5 CM announcements before the ride restarted.
HM: The ride was stopped for at least 15 min. I had just gotten into my doom buggy, and the buggy in front was just about to go through the initial entryway to the ride. I got to watch the CM troubleshoot the ride issues on the touchscreen at her kiosk, which was interesting.
PM: The shortest stoppage of the day-less than 5 minutes. We were stopped just as the train was leaving the boarding area.
IASW: The absolute last ride I would ever want to stop while I was on it lol. Only about 10 minutes-but felt like at least an hour. Once again, boats were bumper to bumper, right near the end, just before the doorway leading into the room with "goodbye" in the different languages. After hearing that song, over and over, I felt my sanity slowly slipping away, until the boat started moving again...