I was there last night as well. Can echo everything about super long lines, and most moved fairly slowly. Even FJ had a 60 min wait at 8pm. We saw the writing on the wall and decided to leave at 8:30, because we have FFP and realized it'd just be easier to leave and return for another night. We only got 3 mazes done (Exorcist, TCM, and Bride).
Tried to wait for Terror Tram when the app said it was a 35 min wait. By the time we walked over their from the Plaza, it had gone to 55 minutes. Got in the line, and it was 75 minutes, all within maybe 10 minutes. Stood in the line for about 10 minutes and didn't see a single tram, and nobody was moving. If there's one thing about the tram, it's the even if the line is long, it's nearly always moving. But not a single person was moving in the queue for 10 minutes.
So we got out and tried to head to Halloween, because the app said it was 35 minutes. By the time we walked up there, it was at 50 minutes. Just left the park instead.
I'm sorry, but Covid is still going to be an issue for me. The first hour or two was crowded, but largely managable. By 8pm, it was wall to wall people, over half without masks, and it didn't feel super safe to me. Will the event get shut down over it? Probably not. But did I feel safe from a pandemic point of view? No, not particularly. Really, if these crowds continue, we'd maybe only visit for about an hour or two and just leave. And it kind of sours me on the event in general.