When you loan your RV to a workmate, be sure they understand that the water pressure regulator should be left on the hose when connecting to a street water supply - especially in a location known for problematically high water pressure. Don't ask my how I know.

OH! and if you loan an RV to a workmate, make sure they're honest enough to tell you when a problem arises so you don't figure it out the night before you are supposed to leave for a regatta....don't ask me how I know.