My lesson from standing in that line last year (the first time they did it since the ride had only been open for less than a year), GET A FASTPASS. If you are coming on the first day they open up for Monsters After Dark, you WILL be waiting for a very long time in standby. Save yourself the headache and get your FP as soon as possible if this is something you want to ride. It was fun, great, but definitely not worth standing in line for more than 40 minutes.