I would not even possibly limit myself to truck stops types like Loves, pilot etc. In fact I avoid them.
Our longer trips are usually several months and 10,000 to 15,000 miles and our most common stops are Costco and Sam's Club. If this is your first real experience with a gasser and towed, I would suggest you spend some time in a few parking lots learning how well you rig turns and what your tail swing is. Big box stores and supermarkets with stations usually are in urban settings and are designed to allow gasoline transport tankers easy access and egress, I tow and my 34' plus RV and GMC Canyon is a little over 50'.
I have only had to disconnect once in over 25 years of rving and towing.