It does indeed sound like you pamper your girls, and the misters sound like fun.
Drinking water is sometimes described as the most important nutrient for chickens. Fresh, clean water is the easiest way to avoid the various water-borne diseases they might encounter during the day. It's also...
Shavings used here too.
Replacing the water every day, rather than occasionally, is probably the simplest and most effective way to ensure the health of your flock.