There have been a few occasions when I have been seating in J or F and an FA will ask me if I prefer to be called by my last name or is it ok to address me by my first name. If I say I want to be addressed as "Mrs. O2k", I feel as if I am being snotty, so I always say, it's fine to address me by my first name. I feel that the FA should refer to me by my last name and it should be up to me to say, "please call me by my first name."