Mrs. Wilson...it's reverse...Mayfield Falls is less touristy than YS Falls which offers zip lining, swimming pools, you can get hot dogs & hamburgers etc.
Mayfield might be more difficult for very young children or anyone with mobility issues...it's a bit more rustic and is essentially a long walk in a river up to the falls...very pretty surroundings.
At YS you can choose to walk next to the falls on the steps or swim in the water on the different fall levels and as I mentioned above there's more options available there. Another pretty area.