It's a rather excellent production, catchy music playing, very appropriate for the things going on(sort of). I noticed the ticket seller was reading a porno mag about 30 seconds in. Nice attention to detail there.
Although, speaking of detail, how exactly is he suddenly whisked away via rope ladder? Assuming it's a helicopter, where did that come from, and why did no one try to climb the curtains to get up there(to escape)? Sure, escape wouldn't be very pleasing in terms of violence, but if they climb those monsters could surely follow. Just curious.