We are from Ohio and have been on Oly Penn since July. I have no idea where the responder stayed at Salt Creek, we were there all of July and Aug. It did not rain one day. Beautiful park on the straight, local deer herd meandering through park friendly and helpful staff. Immaculately clean rest rooms.
Could be they want to keep it to themselves. Reservations are difficult to get, E/W hookups only. Tent and no hookup area is wet and foliage covered. Magnificent seashore it is a preserve and no shells or other collection is permitted.
Salt Creek is a county park with a WWII shore battery Army Fort bunkers available. I would say don't miss it if you can get in. Best chance is Monday am sit like a vulture looking at first come first serve when one pulls out pounch, place a chair or cooler as a marker and then pull to site.