I’m getting the idea you have never been anywhere near Muncie, In 
The area is pretty empty outside of the small towns. You have hotels in Muncie and Anderson. Going south New Castle (I-70) is probably going to be the next area with any type of name brand hotel.
I did the race last year and stayed in New Castle. I did that because I grew up in Logansport and had the intention of being cheap and staying with family, then driving to the race that morning. I had been away long enough to have forgot just how far apart things are there, so the hotel was a last minute thing.
The expo is in the civic center in Muncie. The race is at Prairie Creek. The address they give at the expo is South County 550E (or something close to that). My dash board GPS unit in the Honda refused to accept that or any other name close. I ended up following a local out to the park and setting the location in my GPS as a way point. Turns out the GPS sees that road as Gates Rd. My point is find the park in the day light the day before. Get there early because there is one way in and it backs up quick. There was a line at 5:15.
Beware of the wild life. The guy I was following in that morning hit a skunk and then I ran over it. Besides making the entire parking area smell really bad, I had my car locked in the the 90+ temps and bright sunshine. If you think skunk smells bad in the cool night air, try it in a car with a black leather interior that is about 130 degrees or more after doing a 70.3.