I'm back!
Something oil-related began leaking BAD on the way home, but I'll figure it out.
Here's my experience/advice. I camped in the "Family RV Camping" section, which is outside of turn 3. You can't see the race from this section, but you can get pretty close to the grandstands. I set up pretty close (but not too close) to the bathrooms and showers, which also was a shuttle stop.
When I pulled in, I wondered why so many people were lined up along the back fence rather than close to the track - there was tons of prime real estate available. Seemed like close to the track would be cool. Once time trials started I realized why. It's LOUD. You can't carry on a conversation outside when the cars are running. Next year, I'm going to head for the back.
The spots are just wide enough for a camper and awning. The guy next to me had his generator running at night for his a/c without a Gen-turi. When we got up for breakfast we were sucking in exhaust trying to cook and eat. I had a spare pipe that the previous owner kept on the roof for the generator. I hooked it up to his pipe. He was cool about it and shut the generator off. My Gen-turi worked great, but my neighbor pointed out that I must have an exhaust leak because you could smell it. Nice guy with an '82 Airstream motorhome. He had the same generator and told me the probable leak point. He had been camping at the raceway since 1982 and was a wealth of knowledge.
What a lot of people do is bring little Honda generators to keep their batteries charged and to run small appliances. This is very wise so you don't have to run the big, permanently mounted generators. The Hondas are very quiet and you can set them away from people and plug your power cord into it.
The Family RV Camping section is fairly quiet. The Infield camping looks insane, and the fenceline campers seem more rowdy, too. There are concerts and all kinds of stuff going on in the infield. There's a shuttle to bring you in and out.
I went in with a full tank of water (45 gallons). Dudes used the raceway-provided facilities, women use the RV. Cooking, washing, flushing used about half the water. Holding tanks aren't anywhere near full. There are guys that drive around that will pump out your holding tanks, and other guys that will fill your water tank.
Get there Thursday if you can. The masses start arriving Friday afternoon and the RV registration gets pretty backed up.
Security is really tight. Everyone in your party has to have a wristband and vehicle pass - no exceptions. In the Family RV section, everyone in your party has to have a Sunday grandstand ticket in order to get a wristband. If you have people coming just to party but not go to the race, it's very difficult to get them in.
It was my first totally dry-camping experience and it went well.