[RobSC]

I also think a pressure washer is a must.  It will reduce the amount of water you use versus a garden hose.  My coach came with the CR Spotless DIW-20, and I carry a portable pressure washer.  The DIW-20 resin is good for about 300 gallons.  My pressure washer uses about 2 gal/min while a garden hose would be at least 10 gal/min.  The resin refill runs about $125 plus shipping.