When camping/RV'ing there are three basic levels of convenience; 1, full hookup with water, electric and sewer connections; 2, partial hook up which is water and electric only; 3, no connections at all, we call this "coyote" camping, or boondocking. At this RV preserve there are no sites with sewer, all the spaces are of the second category with water and electric hookups.
In such a situation, the waste water tanks on board the coach have to be drained periodically. Less often, if you are careful with water usage. For instance, we tend to use more paper plates and thereby saving dish water drainage. We make sure we take short quick showers, turning off the water between soaping, scrubbing and then rinsing. Water tanks are described by using a successive color scale; Black-water is toilet water, gray-water is from bathroom sink and shower but also from the kitchen sink drain. We also have separate hoses for the various purposes. We have white hoses for clean water into the house, a green garden variety hose for utility like moving gray water to the portable tank, then there's the big regular sewer hose for draining all the tanks if we have sewer hookup on the site. Today, Dave uses the green utility hose, it's 50 feet long, plenty to reach way up front of the coach to the waiting tank.
When the waste water tanks are full then they have to be drained into our portable tank which is then towed over to the dump station about 100 yards away. Last year in Florida, Dave bought a 35 gallon portable tank, so that he would have to make fewer trips as our coach has 3 tanks of 35 gallons each, it's easier for him. And another plus is that on wash day, Rebecca can wash the clothes at home and Dave just runs the drain hose right to the tank then shuttles the clothes washing water to the dump station. It is easy and we don't have use the coin operated machines.
We only have to drain the "black water" tank once a week and Dave has a sanitary way of transferring the waste to the portable tank. Easy breezy!