This year will be my third 'roo in four years. I missed last year.
It’s a party 24 hours a day if you want it to be, but you can go off and do your own thing, and no one will bother you. I do a mix of the two. Thursday is pretty quiet, with people still getting there, things pick up on Friday, get kinda nuts late that night and into Sunday morning, then calm down again. As mentioned, there is flagrant drug use, and the cops seem to be there more to protect and help than arrest the dealers and users. They don’t care unless you’re causing trouble.
The campground is far enough away from Centeroo that you can sleep easily. As mentioned, it’s just a grass parking lot. I suggest you park, jump out, and throw your stuff behind you to claim as large an area as you can before the cars behind you pull in. That’s how my friend and I got enough space last year, and I’m going to do it again in June.
Getting close to the big stages requires getting there fairly early. If you want to see DMB or Jay-Z, get there EARLY for the show BEFORE them, and be prepared to push through to the front. I got to see Tool pretty close in 2007 by doing this, but it was impossible to get too close to Pearl Jam in 2008, and I left the Metallica show because it was too nuts.
It’s much easier, though still not a breeze, to get to the smaller stages. Just plan in advance.
My two biggest pieces of advice are bring a portable chair with a back because YOUR FEET WILL KILL YOU, and buy a camelback and fill it up with either water or a sports drink. I don’t care how much fluid you drink, you are going to be pissing neon from the dehydration. I also suggest a tarp for shade, a flagpole with a distinctive flag so you know where you’re parked for a distance. You WILL get lost trying to find your campsite the first few times. We’re talking square miles of cars, here; An ocean of automobiles.
I hope you get to go. Speaking as an atheist with no spiritual bent, Bonnaroo is almost religious to me. I am not joking when I say it’s the closest I’ve ever come to understanding spirituality and togetherness. It’s an amazing experience, and I’m taking someone to their first one this year. I’m as excited to be there for her on her first experience as I am to just go again, myself.