In A Royal Wedding, each chapter starts with a newspaper clipping. Here’s the start of chapter 3. I did a ton of research for this book, so this is actually genuine advice, y’know, in case you should meet a senior royal.
Rules to observe when you meet a member of the Royal family
Don’t be like Kumari Senavaka. Know your royal etiquette
Rule 1. Don’t touch them. Don’t initiate a handshake. If they indicate they want to shake your hand, do so, but then let go!
Rule 2: No selfies. The royals are not allowed to take selfies. You may ask someone else to take a photo, but no standing up close.
Rule 3: Show respect. Gentlemen bow and ladies curtsey to the Queen. Although the younger royals don’t insist on bows and curtseys, you may still want to, especially if you’re meeting Princess Helena because she is the future Queen.
Rule 4: Use proper forms of address. No first names please. The Queen should always be addressed as ‘Your Majesty’ at first and then ma’am. The Princes and princesses should be addressed as ‘Your Highness’ in the first instance and then ‘sir’ or ‘ma’am’ as appropriate.
Rule 5: When the Queen arrives, stand up.