Our TC has a small black tank...When it has to go... IT HAS to GO! Then we find internet connection, search various apps, locate a dump station and drive to it = Stress. Then we often pay $10-$15 (more stress) the same as 40 gallon gooseneck trailers to loose 7-8 gallons through a 3" hose.
It seems with a macerator pump and garden house we can "relieve" our camper at any septic system, pit toilet or even porta-pot, For Free. I gather the down side is clear water (also a precious commodity) flush of system. I wonder if a gallon of river / stream or even grey water will work to flush.
We are responsible and know it is imperative that black water be treated before release back to nature. ie. it must go through a septic system at some point.
This is all concept and I wonder if anyone has experience.