Concert starts at 9PM. I arrived at 8:30PM, and the doors were still locked. As I waited outside in the cold, I learn that the show is sold-out, and everyone is excited. The guy in front of me has no tickets, but he claims he spoke to someone from the Exit/In, and they have 20 tickets remaining. At 9:10PM, they open the doors. I'm near the front of the line, but by the time I get to the door there are already several angry people arguing about not being able to get tickets. Finally, at 9:45PM, the warm-up band begins. They finish up by 10:30. At 11:00, the real show starts. The headliners rock the place. The moral of the story: have your tickets, and be prepared to stand all night. There are no seats, just concrete. But if the music's good, you cannot help but have a good time.
Pros: great music, free to stand, good parking
Cons: no seats, long lines, crowded