Really (spoilers)
30 mins in. the "kids" (30 year olds playing people that just graduated) find what looks like a space ship. I understand they don't have cell reception, but why don't they get into the cars and leave? And then call 911 when the do get reception. So what if the police don't believe them.....at least they would be out of the area. dumb dumb kids.
because then we wouldn't have a movie....?