What is the protocol for fueling at the truck islands? Pull up to the pump, go inside and pay cash, and go back out and pump? Both times they have asked me for the name of my trucking company.
We always fuel at the truck island. We have never had any questions asked. That is probably because we are commercial, and we look commercial (to most people, we are still just a bus conversion, but we have a DOT # and everything). We pull up, and one of us goes inside with a CC to authorize the pump. After the pumping is done, go back inside, and tell them the pump number. It is good to know your amount too, so you make sure you don't get somebody else's bill.
If you are private, then I would just tell them, when they ask, "private coach," or "private RV." Since you don't have a company name, it is fine.
Also, I don't get why truckers try to save the .08 a gallon. They have to pay fuel tax anyways. We do. We have to send all of the forms in with how many miles we traveled, etc. It doesn't matter very much to us where we buy fuel, anymore, because we will pay that state's tax anyways. It is complicated, but last year we actually got a refund.
Otherwise, we simply look for the best price. But if it is .08 in tax difference, for us, we don't care.