I have never been, although I went to the Kate Wolf fest last year, and that was great. We are bringing our car camping tent, but leaving the stove home and camp cooking stuff at home: I want to have time to enjoy music, and not do dishes.
I used to work Ren Faire and I was a Burning Man regular, so I already know I love to camp in big festivals, and then adding in all that music and jamming makes it perfect. In fact, my entire band is going, and there are activities for my son, and a lake to jump in,
and....damn I am excited!