I just did the AP one for today. I think it was lights on, cause anything that was meant to be pitch black or dim definitely didn't look like the videos I saw on YouTube.
Very glad I didn't try to go at my own pace and just followed those in front of me, cause I didn't read that there was one scare actor in the final outdoor scene before the exit passage. Thankfully wasn't the scare actor's target, and the scare cue wasn't too loud either, and the guys in front who did get scared had hilarious reactions. I see whatever scent was in that area was still on though.
How common are lone scare actors in the AP/lights on walk-throughs anyway? Fallout didn't have one when I went through the AP walk-through for it last year. It was only thanks to prior foresight I got last year that I kept my guard up.