I have a question for married women who didn't change their name.
Is your husband's family aware of it? Suppose, you're called Sarah White, and you married Peter Jones. Do they address you on correspondence correctly, or as "Mrs Peter Jones"? If the latter - does it annoy you? Have you said anything about it?
When it happened to me, I was actually quite annoyed and upset. I thought "It's 2018, ffs. Have they never heard of feminism? Or women not changing names on marriage? What's wrong with just putting "Sarah and Peter" on the card, rather than old-fashioned Mr&Mrs etc?
It turned out no one wanted to slight me, they just "didn't think". I'm kinda ok with it now, they all are after all very good people. Would you personally go as far as add a note to the back of any card (during festive season when people exchange cards I mean, and you expect some from them) saying "Please kindly note Sarah's name is Sarah White, not Mrs Peter Jones"?