Yes. It's actually twice per year, spring and fall. Look into it, but I'll give you the basics now. It is a 4 day event, Thursday-Sunday. Thursdays are typically people arriving/setting up, Friday tends to be the best parts finding day, Saturday is the busiest day, Sunday is the best deal day as people are packing up.
When you go, expect to walk all day (unless you rent a cart) and cover many miles. I think my phone said I walked 5 miles last time and I only covered the main section. Bring plenty of cash and a little wagon or some other way to carry stuff. I've started loading up a back pack with drinks and snacks. You will be in the sun all day so dress for it. Lots of people leave looking burnt. People come from many states away (Florida-New York-Kentucky) and book up the local hotels so if you plan on staying, just know that.
This is an older picture, at least older than 5 years, but it gives you an idea of the event. The main corral inside the track and outfields surrounding. The bottom of the pic is just parking.
This last year was cancelled
, so I expect the next one to be very crowded as people are probably itching to go.