Pretty much have only visited this place during the antique and flea market weekends so I can't say as to how they handle actual specific events other than this one.
The parking is in a gravel lot/field but they don't charge to park so that is a plus. Admission the day I went is $5 for the entire day. The vendors change around so there's always something new to browse as well.
Thankfully and most importantly there is a small bar between a few of the metal buildings that actually serves beer and mixed drinks. That's a nice break to have given the size and how long it actually takes to take in all the different buildings and weather permitting the outdoor areas.