We were at the 2/17 event and it was a bit of a hot mess, as others have reported. Lots of breakdowns--Big Thunder broke down right as we were about to board and was down most of the rest of the night. Space broke down and was posted 50 minutes the rest of the night after they got it back up. We managed one ride on Mine Train, and then it was posted at least 45 minutes the rest of the night.
They ran out of bottled water at every snack cart we tried.
It was our third AH event, and it as definitely not our typical experience. We did manage to ride a number of smaller rides, but the ones we really wanted were just down or had crazy waits all night. We also got the Rapunzel lantern photo I've been wanting for three years with almost no wait.
It is true that the lines may have been shorter than posted, but we also didn't want to walk all over the park to check. If they are going to post wait times, they should be accurate.
I stopped at City Hall on the way out and registered my disappointment. At first, the CM was just kind of "oh well" and then I mentioned that they advertise "minimal waits" and that 45 or 50 minutes is not a minimal wait, and that we were only able to ride one of the headliners. Then, she offered multiple-experience FPs for our two remaining park days. I will admit that I was hoping for a partial refund, but extra FPs at Hollywood Studios (not for Toy Story Land or Galaxy's Edge) came in VERY handy and make the rest of our trip much more enjoyable. I was literally the only person in there, which sort of surprised me. But I was at least happy to receive some compensation.
I will also be sending an email now that I'm home.
We also did the AH at Animal Kingdom later in the week, and it ran just like it should. So, really, I think it was just that "perfect storm" type situation. We'll still do the event in the future, because it's still nice to be there in the evening without huge crowds.