Well, there are some things the Sewer Solution is not ideal for and one of them is standard issue dumping at a campground dump station. It takes a lot of water and takes a long time, which on a busy morning will not win you any popularity contests. I use your basic stinky slinky for that.
What it is great for is dumping your tanks into a sewer/septic clean out at home, especially if it is some distance from where the rig is parked (or mildly uphill).
The clear extension is handy but you will learn that tomato seeds are indigestible...
Old (usually dirty) Nissan Titan
Old (enhanced with "male pattern baldness") Sovereign
Young, lovely bride
Goofy dog, dismissive cat