While I use Flying J/Piliot frequently for fuel, I have never spent the night in a truck stop. A rest stop/area can be noisy unless they have a seperate area for RVs or picnic area that is away the main parking area.
We do frequently use Wal-Marts for an overnight when between 2 points. Noise levels very but all in all they are quiet enough for a good nights sleep. This past trip we did notice that more and more trucks are spending the night at Wal-Marts now. We pulled in to the Wal-Mart in Childress, TX just after midnight and only 1 RV was in the lot before us but there must have been 3 dozen trucks. Looked more like a truck stop. Stopped at 2 other Wal-Marts for a overnight before the trip was over. In each case more trucks than RVs but at the last WalMart the trucks were only there for a few hours at a time before moving on.
I know truck stops get crowded and they have to stop when they run out of hours but hopfully they will not ruin it for RVs at WalMarts and other RV friendly places. My neighbor drives for WalMart and has said some stores are now refusing overnight stays due to the trucks.
2004 Volvo 780. 465hp and 10sp Auto Shift
2009 Montana 3400RL