You can park in any truckstop if You can abide the big rigs moving around at all hours.
Your SMB will go places we can't get with the TT and affords many more opportunities to park away from the Big Rigs.
We often stay at these on our "Winter Safari's", looking for a spot where we can put our slide out and sleep, dine, etc. in the TT.
We've never been hassled by cops, truckstop employees or others, [hookers, theives etc.].
We do make it a habit to ask although it ain't nessary, and usually buy something, [fuel, food, misc.].
One TA, [in Tucson] even allowed us to plug in when our batteries ran down.
Nice folks out there.