I had a great time here as a post-conference social with about 30 friends and conference participants. We went straight to the very back outdoor area. There are plenty of tables back there, but there's also just a large space by the fire. It worked out perfectly for us, and we were able to just hang out, enjoy some drinks (great beer selection), and get groovy with it when the beat was right. (We may have turned our little corner into a dance club, even though Handlebar was very clearly not a dance club.)
The drinks here seem to be pretty average priced. Didn't get a chance to eat anything here though -- but definitely want to come back for some food sometime!
Would definitely recommend Handlebar if you're looking to just casually hang out, grab a beer, or some food. It gets pretty loud inside with all of the TVs on when it's packed. Really big space though.