I'm keeping my last name just because I find the concept of changing it to be kind of weird. I'm Chinese, and we don't change last names when we get married. lol. My boyfriend's last name is also non-asian, and my first name is actually a male name, which is confusing enough as it is. I feel like changing the last name to his would almost be false advertising on my part 😛 You would totally be expecting a WASP male doctor, as opposed to the small asian female one that would show up.
But yeah. Legally, I'm not changing it (because i also don't want to take the time to do the hassle of changing over passports and licenses and credit cards etc) but outside of work (i.e. PTA, his family functions, parties), I"ll probably just go by Mrs. X just to avoid confusion.
I think it'd be funny if I made him do some chinese marriage traditions, like wearing a big red dress-robe (with a big bow tie on it) to his wedding. Nah, I'm not that mean, heh.