I don't know how many that attend this, but we have been going for the past several years. It has been cancelled, and tentatively, rescheduled for October 2-4. This is where Porky's went and is still operational, providing food to attendees. There are about 100 old buildings to go thru and see and MANY vendors and a large flea market. They also have a military re-enactment with lots of noise for the kids. It's a really fun place to visit during this show and the grounds are plenty large enough for a club gathering off in a corner for a meeting, it desired. We usually rent a golf cart to go around the hundred or so acres in the morning.
We can pay an entrance fee to park our vintage cars on the grounds as part of the show for about $20 with 2 people. Not certain if that would cover children as well, but some ages are free anyway. Parking on the grounds saves a long walk from the parking area in the corn field...