I don't think a health department would inspect a RV business except maybe for lead in the water. I do think that those little black boxes around the perimeter of buildings work and are very cheap. They probably have them, as they don't want their stuff chewed up either.
If the decision was mine to make, your trailer would have been repaired at no charge to you. Customers are to hard to find, much less keep.
After all how hard are wires to reconnect? Hourly guy, a soldering iron, wire maybe, and some shrink wraps. Not 5 hours worth unless the damage was extensive.Just don't attach a blue wire to a red one etc.
Have you talked to the owner or just an employee?