[Suzaku found you were usually safe it everyone was addressed with a neutral 'My Lord' or 'My Lady', to be honest. It was usually his default response if he was faced with someone he didn't know.

But yes, they were. That was something he could agree with her on wholeheartedly.]

Among Lelouch and the others, yes. If we come across Schneizel or Cornelia, however, it's usually safer with a "prince" or "princess" added on. Although Schneizel usually isn't around much and you can usually drop it around Cornelia once she's been around you a few times.