I liked Austin a lot, fell in love with the place. I'm actually thinking of moving there.
Party at Lil Sparrows nest!
Libby, Austin is college town so there are plenty of hot young babes everywhere. I loved that part. Everyone is friendly, drinks cost next to nothing.
The track is spectacular. Top international quality surface, wide, elevations, slow and fast bits. Plenty of viewing areas. If you've been to Silverstone, it's similar in the sense that it's a vast expanse to cover, so be prepared to walk, but it's worth it, plenty of interesting spots to watch. I recommend turn 1 to watch the race, it's elevated and you'll see the start, finish, and the first several turns.
The prices of admission is reasonable. I have no idea what the paddock access is like. There us a thread here on the social board of a meet up in 2013. I'm not sure how informative it is but I suppose it's worth a look at the last 10-15 pages.
Shovelhead has a great summary of his weekend. Arrabbiata1 and Willski can tell you about the joy of flying from England and the welcome they received in Chicago.
As for me I had the time of my life. My only regret is not finding Motochick. She PMed me, but just when I was about to meet her we gathered to meet Kropotkin, which is a whole other story.
Camp O'hare
Downtown
Willski's Party
Shovelhead's summary
http://motogpforum.com/showthread.php?p=348434