Gold field in AJ has free rv camping, any truck stop (Loves, Piolet...) has free rv parking, AJ VFW for members, Camping world, home depot, and most rv repair shops allow overnight. Almost every vacant desert area on out skirts of AZ cities/towns is free legal dry camping. Kearney river has lots of camping, lower rosevelt dam area is free, Box 8 Ranch in Superior is beautiful and super inexpensive-like $25/night w/power...hope that helps.
They have "no overnight parking" signs. You could ask the manager.
Thanks! Your answer is awaiting moderation.