I remember my neighbor, father of the bride, and the groom got in a drunken brawl outside the house the night before the wedding. Cops came, maced the groom, he spent the next 1/2 hour puking. Got to give it to FIL, he kicked some ass.
I could only imagine the wedding pictures with all the bruises and black eyes though.
I'm guessing the crowd wanted "Freebird" and the band didn't know it. That'll always cause a ruckus.