Thanks guys. Not sure why I never considered this before. Makes perfect sense. Might not do it all the time but in a pinch, dry camping seems logical to extend the stay. And with my set up, it's really easy and nothing to modify.
BTW, I installed an electric remote switch on my macerator. Now I can activate and dump electronically from anywhere within 50' without touching anything other than the keyfob. It's not as high end as your air controlled setup on your Prevost Mark, but it's pretty cool. Remote control tank dump. Now that's rouging it.