Question please help

I didn't know where to put this so hopefully someone can help me. I hadn't planned on going to Indy because of work, but now I may have Monday and Tuesday off, and since I live in Ohio, I was thinking about driving over to see the car show. As I hadn't planned on going, I never registered. Can I still see the cars without registering and I wouldn't want my car to be judged but would I be allowed to park with everyone else? Also what time does the actual car show start?
Thanks, Dave