I've been thinking of trying to same thing with weed at HHN Hollywood.. I would avoid hallucinogens, that's probably too much.
Sometimes weed can make you paranoid about the wrong things, you might be too distracted worrying about things completely unrelated to the mazes like security at the park knowing your high, wondering if you forgot to lock your car door, or the North Korea arms race.
I would recommend trying it before you watch a scary movie, if you get freaked out... then you know it works.