I use this Waterless RV Wash Wax Mop Kit and LOVE it! I can wash/wax the whole 44 foot rig in about two hours! Three hours if there are a lot of bugs on the cap. Maybe four, if I want to really detail beyond what I can do with the wedge tools in this kit. And it's a "dry" wash, so you can even use it in the majority of parks that don't allow washing, or charge extra to allow you to wash with water.
We've also had the rig cleaned twice at a truck wash. The first one was not a Blu Beacon and they scratched it up a bit (very light brush marks), after which we had it washed and waxed professionally to remove the scratches. Expensive mistake! More recently, the rig was VERY dirty from dust storms and we tried a Blue Beacon truck wash. That one did a great job on the rig AND truck for $44. Will use them again when we can, and maintain using our wash-wax-all kit.