It was an interesting night last night.  Crowds began much lower than usual, likely due to the fires.  Air quality was fine around 5pm, but got progressively worse throughout the night.  I felt bad for the team members that had to be outside all night, I saw no masks, and many were covering the mouth and nose with their sleeves.
Was trying to take advantage of the 5:30 early entry for the backlot.  Walked into the tunnel and was stopped, without any explanation, until 6:05.  Which really screwed up our plans to be out of the backlot with all mazes complete by 6:10.  Not one team member came by to check, apologize, or explain what was happening.  It was very frustrating.  I was told on twitter that some cars/vehicles had to be moved out of the way, but that did not come from the official account, I think just from some kindly team members on their own time/accounts.
We did complain to Guest Relations, where they did give us a FOL pass for the maze of our choice, which was nice.  We used it on Holidayz, where we happened to catch a major cast change, and maybe 1/3 of the usuals weren't there.  Figures, haha.  We left around 9:30 because the smoke was getting pretty bad by then.