FWIW, when doing interstate treks that take us well into the after-dark
hours, we usually pull into the parking lot of the nicest motel we see.  Have
never had even a remote problem.  If we're logging less miles per day, then
we'll try and locate a more serene spot during the daylight hours.  But even
that approach doesn't guarantee quiet - like the time the local kids set up a
midnight kegger about 200 yards from our site.
My two cents worth,
Greg
86.5 Camper Syncro WLE