The larger tanks, in the 27 to 35 gallon range, all have automatic stops to prevent “messy” overfilling, while the smaller ones such as the one 12 gallon model that might actually fit under my unit, has no such safety against overflow. Just use long, industrial strength rubber gloves and a good sense of timing or your 26 gallon trailer tank will overpower the little 12 gallon portable unit, and you will wish you had just moved the camper to the dump station instead. I can only imagine the difficulties in cleaning a pad that has no water connection!
We have no choice but to kill time at the really nice visitor's center, where we chat with the woman who runs the gift shop. There is no information more valuable than from a local resident, and her information and insight immediately makes it clear to us this is an area we want to see. She tells us to come back at 9:30 in the morning for a vendor's showcase. We'll have a chance to win door prizes and pick up all kinds of brochures and passes. They'll even have free coffee and doughnuts.