Quote Originally Posted by piperdbh View Post
Not trying to change directions here, but with all the titles and honorifics that Prince Charles has, does the way one addresses him change? For instance, would it be bad form to address him as "your Grace", since he's a duke, and "your Lordship" since he's Lord of the Isles, and so forth, or is he always addressed as "your Royal Highness"?
One should always use the most senior title; so "Your Royal Highness" is the one. When in doubt and also non UK and non colonial residents are given a wee bit of leeway here, so, "Sir" will get you out of a hole!