We fill wherever the best price is. If that means a regular fuel station, then so be it.
Never a problem at truck stops other than us having an out of country credit card & no zip code attatched to it. Long story, but it means that somebody has to go inside first to get authorisation. This takes time at a busy place.
There will more likey be a problem at a regular fuel station where the diesel is on an island shared with a gas pump & you can't get to the island because a car is there even though there are plenty gas only islands which could have been used.
The usual story. Nobody thinks past their own little world. No better than the ones who pump gas then trot off to the bathroom or get some food leaving their car at the pump.