All fencing MUST be approved by the park before being installed. We have water, electric and sewer lines in the ground and driving stakes into the ground could cause a problem.
Same thing with posts where we have recently seen several 4X4 posts installed to hang lights on and so forth.
Lastly, please do not put nails in trees. It can damage them. Yes, I know our number signs are on there and it sounds facetious. They were installed before our time and are not replaced when broken.
Thank you,
Tim