How to meet All Time Low on the Dirty Work tour without a meet n' greet?

I'm going to see All Time Low on the Dirty Work tour and I'm dying to meet them, but I don't have/can't get a meet n greet, so I was wondering what to do to meet them. The venue I'm going to blocks off the tour buses.... so what should I do?? Thanks! ATL 4ever!!! :)