We are looking to make a 'practice' run this Spring, making a cross country trip for 6-8 weeks. It could very easily lead to a full-time period, depending on how it (and some work items) works out. ...
99% of the CG's have a laundry room. And heck the machines are set up for usually a buck and a quarter. You won't find washers THAT cheap in any laundromat. Plus the ease of walking a few feet and putting you clothes in and return to the comfy confines of your RV is priceless!
Just call ahead and make sure your next stop at a CG when you have laundry to do has washers and dryers on the grounds. It's really that simple! :W