Bathroom floor is flooded but the tanks aren't full

Bobbo, if you only have a gravity fill, how do you hook up to a water source when at a campground? Do you stand there and hold the hose each and every time you have to fill the tank? Kind of tedious, I would think! On my 2008 Tioga, and on a 1994 class C I had, both had gravity fill spouts, plus a hose coupler. That is why the sell the pressure regulators, so you can leave the hose connected to the water source.