Fencing restricts wear & tear foot traffic to a small area, thus exceptional wear to the grass in that area. Fencing requiring stakes is never acceptable, as shallow cabling such as CATV, WIFI, could be, has been damaged, tree roots pierced so much that the posts broke off when removing them.
Containment of pets with fencing is superceded by law requiring leash. Thus, liability shifts to the pet owner.
As park owners review liability,potential exposure, it behooves us to choose restrictive measures, as protective of our facility and our majority of guests.