Does anyone know how many tents can go on one campsite? We have two tents.

You can only have a maximum of two camping units on any site. You also have to put tents on the tent pad so that is more limiting. At Fairy Stone the tent pad size is 12' x 14.'

I think you can put what you want as long as you stay within your campsite area

It depends how big the tents are, but proabibaly 2-3 tenets.