realize it's a function of tank sizes, but how many days between emptying tanks are realistic / typical for 2 persons when "boondocking" (hookups not available)? or maybe a range? thanks!
its a function of tank sizes, and education. DW & I have gone 15 days several times dry camping on a 80gal fresh, 50gal black, 100 gray. Navy showers, disposable dinnerware, bottled drinking water, extra fresh water. A trick to utilize all your tank capacity is to add another valve adapted to a twist lock to your dump, so you can open all your other dump valves to let the water mix and equilize in all tanks.