Okay to park. Okay to stay overnight. Both RVs and trucks here the night I stayed.

What signs?

This huge parking area is shared by several stores. Its wide open and mostly flat. There are no grass sides to park along, just a few islands to relieve the dogs. Several RVs and a few semis, no problem. I did not see any No signs.

No overnight Parking

Stopped after long day of driving. Signs posted no overnight parking. Service desk rudely confirmed no overnight parking. Huge lot. So we drove on.