I was going to go to a different Renaissance Festival in Ohio, but now I’m going to this one since it’s closer. The other one had costume rentals and I was wondering if this one did also. If they do, what are the prices like and how authentic are the costumes?

I am not sure if they have rentals, but they do have lots and lots of period garb for sale. You could try calling local costume shops to see if they have appropriate costumes. Have fun!