We are having a family reuiuon in a couple of weeks and was wondering if could put a sign up to direct people to our picnic area?

No u can not put signs up, but if u reserved it they will direct them to the right one

You can put up a sign at the location of the picnic.

The park will direct you can also put signs at the covering or they will mark it reserved for six an such also main office as you come in can post there and people can check to find.

I don't think I have seen signs but when people come into the park the person working booth gives them instructions. You could probably put them right at the spot but I doubt any where else...