We dry camp and often use a CG without sewer. The CG charges $20 for honey wagon service.
We have a large Blue Boy. If towing to a close by dump station, it's doable. If a distance it needs to be carried. If you have a truck and a macerator pump, a distance is doable.
Showering fills the grey tank the fastest. Navy showers are key (get wet, turn off the water, clean yourself, water back on and rinse off). Better if you can shower elsewhere - a gym, CG facility, truck stop, etc.
Vince and Susan
2011 Tiffin Phaeton 40QTH (Cummins ISC/Freightliner)
Flat towing a modified 2005 Jeep (Rubicon Wrangler)
Previously a 2002 Fleetwood Pace Arrow 37A and a 1995 Safari Trek 2830.