When I went to go see Taking Back Sunday do this (was it last year or the year before, I forget) it was terrible. No one in the crowd was pumped, kids were throwing stuff all over, and TBS themselves weren't too good anyways.
The one in Orland Park (Chicago) two years ago? I love TBS, but I didn't think the show was the best. For free, I couldn't complain too much.
Considering it's in a mall, I think it's okay to miss it.
I wish I could go, especially since Sparks! the Rescue is opening, but I have finals that weekend.