It is amazing how good our coach will look from 100' away. Get closer, and you will see the road grime. Paint color can make a big difference in how good an actual dirty coach will look, from a distance:)!
We waxed before we left. Washed once in Tok, and just washed again in Seward. We've had great weather here for over the 4th, but heading towards Valdez via a one night stop in Anchorage for Costco/Fred Myers re-stocking, and they're forecasting rain. So, by Tuesday or Wednesday, will be dirty again.
In between, I will be that old fart you see in some parks out with a micro towel and my choice for 'washless' cleaning (Using a Griots product now. But mix it up with Zaino and others from time to time.) I keep the basement doors clean, and around the front door area too. I do not attempt to clean off the behind the tags basement doors, as they just have too much road grime built up. And by pure luck the wrong way, the paint scheme on the rear of the coach basement and side radiator vent areas is rich dark maroon. The rest are light beige color, that hide the dirt well.
One other thing I do after these 'on the road' washings, is go over the paint with a product that you spray onto a clean micro towel and just 'wipe on and walk away' no removal required (Zaino ZCS). This keeps the protection of the applied wax in good shape, between full wax jobs. I use a swifter pole and pad, with the micro towel attached to the pad. Can reach all the way to the rail area.
But you know, like many of you, while I care about the condition of my rig - I don't get too worried if it's dirty. We knew going, that this trip in some areas would apply more dirt and grime then we have ever seen on our rig. When we get back to home base, we'll wash and probably give the paint a good clay and buffing, it deserves it. Before then, it is the Go North To Alaska dirt badge of honor:)!
Best to all, shine or dirt, have fun, stay safe,
Smitty