My parents are in the health care field, and a number of their best friends are physicians. But on all the response card designs I like online, it has "M _____" to fill in the guest name. If someone is "Dr. Smith," for instance, they couldn't fill out "M____" on the card because they're not Mr or Mrs. They'd have to ignore the "M___" and write "Dr." instead. I think my parents' friends wouldn't even notice-- but is it rude of me to send response cards that assume someone will fill it out with "Mr, Mrs, Ms"? Or am I worrying too much? Thanks for the suggestions.