What exactly is halloween horror night at universal? I was reading some older reviews and the refer to going in and out of the houses, but I don't know which houses they are referring to. I also found a review where someone had a VIP tour which included front of the line passes. This sounded like a good idea for us, as we have no idea where to go first and how to make sure you see everything. Does anyone know more about this, thanks for any advice.