Morning, all.
I'll review what I have done and what I do.
Initially, the food and water stayed in the Veranda, a porch surrounded with half inch metal 16 gauge hardware cloth, top, bottom, sides. I put sand in the bottom and had sawdust and-or straw on top of that. That kept the water out of the sleeping area. Worked great.
When I learned some of my Runners are not cold hardy under 35F, they moved into the walkout basement pen. And I came up with the Watering Station, the bottom half of a large plastic dog crate, with a few inches of sawdust pellets in the bottom, and a 2 gallon flat-bottomed, straight-sided stew pot for the water. Works very very well. Daily, I scrape the top inch or two of damp sawdust and poo out, and scoop up four inches around the entrance. Done. Keeps the rest of the bedding pretty dry.
I spot pick poop in the rest of the bedding, and fluff with a cultivator. Depending on the season and the weather, every week or two I do a Big Cleanout and replace the bedding. Once old bedding is pulled out, I put DE around the edges of the pen, into all the cracks, and sprinkle either Sweet PDZ or peat moss to reduce the formation of ammonia. (Geek note - nitrogen in a high-pH (that's alkaline) environment tends to form ammonia pretty quickly, so the peat moss lowers the pH.) I used to do Big Cleanup all at once - then I changed to doing about a third of the pen each time. Less effort, on a daily scale.
In the Day Pen, we have a nice compost base. It smells like fertile earth, and the ducks can forage for soil critters. Under the swim pans we have a mix of smooth pea gravel, sand, and oak leaves (as well as whatever else gets brought in, like grasses and green leaves). That gets scraped off and replenished on an as-needed basis, once or twice a year.