I think on average I either wash the coach myself or have it washed at least once a month. I use a microfiber towel and get on my hands and knees on the roof and wipe'r down with a bucket of soapy water. I bought a pair of velcro knee pads which are so comfortable and save my knees from the hard roof surface.
I spray off the roof after soaping it up and let it dry on it's own. Then I start on the sides (shady side first)....then by the time I get to the other side it's usually in the shade or the sun is more overhead. I wash one side, then dry it off with a microfiber towel (yellow ones from Costco) then continue around the coach.
To wash and dry the whole coach, wash and dry the wheels, put 303 protectant on the tires, it takes me about 2.5 hrs. And, I'm exhausted afterwards! LOL! But I love doing it!
I usually let the guys in Las Vegas wax the coach as I go there 4-5 times a year. But, I do have a couple of bottles of Maquires 'spray on, buff off' wax that works well. I use my super-duper Malm's pure Carnauba wax (too expensive for the whole coach) just on the front cap. It makes the front stick-free for most bugs, easy clean up at each evening stop.
MM.