I use automation to enable always on when I leave my home, because it’s fun to share the watch faces when I’m out and about. Back to off when I’m home, to save battery!

This: https://www.theverge.com/23522956/double-wristwatch-apple-watch-smartwatch-mechanical-quartz

At bedtime, I use automations to pick a random watch face from my collection, it’s just fun to be able to use them all and to be surprised with which one pops up. If I’m not in the mood for it I can swap manually, but that’s rare. I found the automation instructions here: https://www.reddit.com/r/AppleWatch/s/6QNc4ScVB9