We haven't always had a small short coach. When we were towing, I looked for the RV lanes. One of those times, we got in line behind a coach-only. He finished fueling, then went inside - as nearly as I could guess - to have lunch. After every bit of an half of an hour, I backed and broke the rig. Then I went to a regular pump for fuel. Came back and picked up the tow (a car hauler). When I was ready to leave (now more than an hour) the owner sauntered back out and set up to dump his black tank.
Then another time, we got into the RV lane, only to find that the fuel pump was down and the exit was blocked (I have forgotten what by). So, we backed the rig out and went up the road for fuel. It was less expensive there than it would have been with the stack of discount cards....
We rarely tow these days, but I will never stop at an RV lane unless it is open and even then, it has to be worth the aggravation.
Matt