More on succession and styles of address

[grannybat84112]

My word. The intricacies of royal titles and inheritance are 
positively Slytherin.

> The ruling sovereign is always adressed "Your Majesty" 

Are "ma'am" and "sir" acceptable fallbacks according to protocol? 
I've seen news footage of celebrities chatting with Queen Elizabeth 
and addressing her as "ma'am." 
 
> A Prince Consort, as well as children of ruling sovereigns...
> are normally entitled to be adressed "Your Royal Highness", and 
> referred to as "His/Her Royal Highness" - in the case of male 
> children, their spouses will be afforded the same accolade; ... 
> In the case of divorce, a 
> spouse granted the style of "Royal Highness" will tend to loose it, 
> but not all the styles and titles associated - see the reversion 
> from "HRH the Princess of Wales" to "Diana, Princess of Wales"

Is there some particular privilege that comes with the title "His/Her 
Royal Highness?" A British friend of mine mentioned that there was a 
lot of public anger on your side of the pond when  Diana wasn't 
allowed to retain the HRH after the divorce. 

Grannybat