For my own suggestion, see if you can find a sewer line cleanout around your home.
I have a 4" cleanout next to my driveway, adjacent to my workshop. It's mildly inconvenient with the Roadtrek as I have to position the van just-so in order to dump into it, but it's still better than being stuck going somewhere in order to use their dump station.
Also, if your van uses a normal TT-30 travel trailer 30A electrical connection, look at what you can do to hook it up to charge or run appliances at home. I obtained adapters to use on my Jayco and my Roadtrek for both my 240V 50A NEMA 14-50 receptacles in my workshop and for the 120V 20A NEMA 5-20 receptacles on the house.