I haven't been to a BNL show, but I'm guessing the fans do not tailgate 8 hours prior to the start of the show. I think their music is good, but the concert and partying can't compare to a JB show and pre-party.
I like some of their first album well enough but the use of their song "One Week" in that car commercial (that used to air no less than every 5 minutes) pretty much ruined them for me. Right up there with Celine Dion for current worst Canadian export.