Ducks are professional slobs. They fling water and feed everywhere and keep their brooder soaking wet (I have to change mine several times/day). While they've been inside they get play time in a hog pan I set in the floor of the shower. Thank goodness they are getting ready to move outside to their pen sometime next week. Then they'll have a kiddie pool or a small water trough and will be able to roam around in the goat pasture and orchard during the day. That being said I've got 2 Khaki Campbells and I love them- they've got great personalities and worth the mess (at least to me).
I just don't think DH would go for it because when I initially started into this poultry keeping I told him I only want 3-4 hens. I'm currently up to 6. Oops!