By Rya Backer It's my first time at Bonnaroo, and so far, I wouldn't change anything for the world. I've been hit in the head twice (once by a Frisbee, the other time by a young man on a lot of drugs in a banana costume); I haven't eaten a vegetable since we flew to Nashville on Wednesday afternoon; I saw Jon Pareles and Bill Murray enjoying Radiohead's set; and I've seen more regrettable tattoos in just these three days than I've seen in my entire life (special shout-out to the black bear on the California state flag whose claws morph into...