When fueling up while towing, I try to give myself as many options as I can.
On a recent trip, traveling through East Tennessee, I used the iExit app and selected an exit that had 3 gas stations and several fast food places. It turned out that two of the stations were virtually inaccessible at the time (waiting for the far right pump would have left my rig blocking the road), and at the third station only one lane seemed suitable, and I had to wait for the customer in front of me to finish pumping their fuel. Even then it was going to be a tough right turn to exit the station. As I am fueling, a sedan pulls up to the pumps on my right, and pulls so far forward that I can no longer make the right hand turn to exit, and they disappear inside the store for 10 minutes.
My point is, without the third option, I would have been back on the interstate looking for the next exit.