It has been a while, but I recall that the Winnipeg style "run and get a good place at Main Stage" occurs. Sit on the ground, they sell special chairs that are back rests only. A foamy and a blanket are adequate. Weather could be a problem, but I have only seen the VFMF in the heat. Your teenage daughter ought to be able to find something to listen to, the range is pretty broad. If not, the site is right on a beach, which can be accessed.

Have fun.