Water pressure regulator..get a good one and use.
Unless you go to the same CG over and over you have no idea what the water pressure will/can be.
Water hose.....when temps drop below freezing disconnect it. WHY have a problem when it's so easy to avoid.
Not using your fresh water tank and pump?????
What are you going to do when the CG water source isn't available because:
CG power is out....no pump/no water
CG water line freezes....line broken
CG shuts down water due to problems
We always have water in tank......just in case.