I went last april 2012, i had no problem driving in or out, i know their are camp grounds but i didnt use them, so not sure how far away. Driving in town was not bad at all, i usually got their pretty early and didnt have trouble parking, and thats when i would eat or walk around, until things got moving, in illinois stores are open all nite or they open at the crack of dawn. I also thought prices were extremely high, i expected bargins, but i was wrong, Eleanor burns had several stores at differant places throughout the town. At the show i picked up lots of trinkets to give away, these were still on the pricey side but very cute for swaps and such.
I know a lot of people go back year after year, but i will not be one of them.
I do hope you have fun and safe travels