Many thanks to all for the responses and info. Much appreciated and more welcomed. So if I understand correctly, overnight parking is legal in most rest areas if needed? Great to know too about Flying J and TA.
These basics are great to know and I'm sure we'll need them. We've always traveled with our German Shepherd dog and with our smaller rigs we always stayed in state and public parks and the dog was never an issue, but now with our extended-stay larger rig we've found that we can't drop in on just any privately owned CG without calling and checking first. So we can't plan on using an un-scheduled CG and that is another reason why we might need a non-CG over-night if we can't make our planned stops. Thanks again to all.