Approximately how long do you think it'll take to go through the haunt if you arrive around 9 on a Friday? (Asking in regard to taking train home)

The inside tour is about half hour. The line outside goes around the block by 9 especially a friday. So you're looking at 1 hour an a half to two hours on line. But even though it sounds long you will be entertained while you're in line. Zombies walk around and you can take pictures with them. Its a must go event

I went on a Thursday at 7:30. So if someone has a better time to compare to yours I would go with them. On that note, the penitentiary took a little more than an hour with lines and such. By the day and time you are going I would say an hour and a half, to be safe two hours shouod be fine. From what i saw they keep the lines moving.

And if you're worried about standing in line you can always upgrade your ticket to Quick Pass, only about $5 more than a regular ticket.