Equality rules. I've never worked anywhere where the bosses were Mr. (And they always were male; I didn't see a female boss until I became one myself!).
I had one young man took a while to get used to calling me Sally; he seemed to prefer to call me 'Boss', which I didn't mind, as it was done in a good-natured way.
I've been asked my preference at hospital recently, and been given first names by the staff helping me.
What infuriates me is being called Mrs. None of their business. I use Ms, and did throughout, when I was single, married and now divorced. I don't mind a bit if other people want to be Mrs or Miss, but I claim the right to be Ms for myself.
I even considered doing a PhD just so I could be the non-gender-specific Dr ! (I'd never have the stickability to complete a PhD, even if anyone would give me a chance at one.)
I often don't correct people who call me Mrs BH, though - how do you do that without getting into,"We live together but we're not married"? Which is none of their dang beeswax!