I never stay anywhere longer than a few days and it might be the way my bus is set up.
I fill my water tank and pack everything back up. It takes less 3 minutes to set the regulator, filter, and the hose unless I need more than one hose. It takes about the same amount of time to pack everything back up. It takes about 30 minutes to fill the tank depending on the gpm I can get.
When I dump my tanks I get everything out dump the tanks and put everything back up.
I could see leaving everything set up for days, but I have seen to many rug rats playing with peoples stuff at camp grounds.
A watts high flow regulator is a must. I have seen camp grounds that pegged out my 160 psi gauge.