RE: Concession rent
When I sold sweet corn and other veggies at the side of the road the lot owner let me use the lot for free, as long as I realized that (wink wink) I was there without his permission. (insurance?) I gave him a dozen ears of corn twice a week or so.
A customer who rents space in a midway pays 25 to 50% of sales depending on the deal that she can work out.