My wife and I stopped over at the market to check it out to see if I can bring my trailer..looks like a great place to sell at but driving about a mile to go use the bathroom is a little crazy for us...maybe you can put up some porta potty

Indoor (not smelly porta potties) rest rooms are available at the church which is a half block from the flea market.

Is it the church on the corner there remodeling?? If so then it's about a mile from the market

I don't know where you got the distance of a mile for the bathroom. The church is just up at the corner. Three houses away.