Stranded in Marietta, GA

We are on our way to Florida in our 99 American Dream diesel with 43000 miles.
After pulling off of I75 in Cleveland, TN for a rest break, I lost pressure to my air brakes.
A local tech was sent out by Good Sam, who looked everything over and said I had been on the brakes too much and I should continue on my way (I'm trying to make this brief).
So we drove another 89 miles to our overnight destination in Acworth,GA.
While maneuvering in the campground my brakes locked up from low air pressure and it took me an hour to build up enough pressure to move it into our space. A mobile service came and found a deteriorated filter in the air dryer, which was to have been checked by a service garage before we left on our trip. They also determined that the governor was defective and replaced it.
When testing it out it first appeared to be working perfectly, with pressure building to 125 very quickly. But after several cycles of test braking, the pressures failed to recover past 60 pounds.
So they checked further and found an issue with a sticking unloder in the compressor. They were unable to get a new compressor until late next week, at which time they had already scheduled work with their regular truck customers. So they did not bill me for the parts, and their labor rate was very reasonable.
Now I am faced with the prospect of having it towed, possibly to a Campers Inn service location nearby (6 miles).
I'm debating whether or not to attempt to drive it there in order to avoid towing. I'm more concerned about potential towing damage to my pristine old motorhome than I am about the cost of towing.
Does anyone have any thoughts they would care to offer?
Thanks in advance.