Welcome to The Norfolk Broads Forum
This is THE Worlds Largest Forum devoted to the Norfolk Broads, here you can discuss issues about the Norfolk Broads. Or just somewhere to chat with others interested in the Norfolk Broads area.
All the boat yards have water facilities, and many of the bigger moorings like Ranworth have water hoses,what you look for is a large coil of blue plastic hose always on a post.As for filling up what we do is have showers ect when we have water facilities and then leave with a full tank ,you really should not have to fill up every day, ask the boat yard how big a tank you have.You will have no problem finding water hoses and most are free.I dont know what you are hiring but if it is a yacht you might want to take a large plastic container and keep it full of water if you are worried.