Still can't understand why folks are hung up on Walmart and truckstops (not quiet or private) when other options are available. Really, if just stopping for an overnight spot to eat and sleep is the criteria, check this app out:
https://freecampsites.net/. Simply plug in the city you're close to and it will come up with multiple options. Some free some minimal charge some just good old rv parks. We've used it and found that it works for us.