Day and a half 2 days isn’t unheard of depending on watch face and how you use it. I average that.

That has nothing to do with keychain or passwords…

20 years ago with nicads sure. Now days not so much.

Charge the phone as needed, replace the battery as needed.

No 2 batteries are the same and each user is going to experience different things.

While not as in depth as Google. It’s actually not that bad if you just wanna go point A to B. If you are planning stops or wanting in depth about things on the route etc Google is still the best.

It’s not shocking Apple is one step ahead of legislation and law. They have one of the best legal teams in the world.