I'm probably too late to be of any help, but just in case...
Too bad that the Hip are playing this horrible venue - every club in town is trying to take advantage of the recent closing of the only real mid-level music venue. Thus, you've got gigs in dance clubs.
Don't count on the free beer. Even if they have it, it'll likely be a curcus. Better to check out some of the joints recommended prior. I would not hang around the immediate area. It's very cheesy & touristy. All the big chains. Head East on Carson Street - to the Southside. Lots of great places like god's shoeshine mentioned. There's a pub/bar on 18th-20th street called Smokin' Joes that's very cool until the crowd rolls in. One of the best beer selections in town. There's also a decent record store near there - Dave's Music Mine.
If you've got car access - you can easily cross the rivers & hit the Warhol and/or the Mattress Factory
MF .
I'd go out of my way to hit the best bar in town too - Gooski's on Polish Hill. It's above the strip district.
Nothing is really very far in Pgh & you shouldn't have much trouble navigating around on a Sunday afternoon. (There's no football game.)
I'd like to go to the show, but I've got a little post-London recovery going on. And I've got to save some energy & $$ for the Liars/Blonde Redhead show on Monday.