Everyone Else
If you plan to host or greet other Royal Highnesses or even a Supreme Court Justice, we suggest you consult, in this order:
1. The Office of the Chief of Protocol [
Here]
2. The Green Book
3. [
This] Wikipedia article
(Okay, fine, we will do Kate & Will.)
Envelope: Their Royal Highnesses The Duke and Duchess of Cambridge
Salutation: Your Royal Highness(es)
Oral Address: Your Royal Highness(es)
Place Card: His/Her Royal Highness The Duke/Duchess of Cambridge
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