Just few of the Royal Family few rules according to british gazette

2. They're not allowed to have any political views or run for office and they're barred from publicly
speaking about politics.

6. forbidden game

8. Two heirs aren't allowed to travel on the same plane even though Will and Kate break this rule often. This rule was
put in place to make sure that in case of an accident only one heir would die.

10. The myrtle plant from Germany was given to Queen Victoria by Prince Albert and it has been included in the
royal wedding bouquets since the marriage of her eldest daughter, Princess Victoria.

11. Charles and Diana became the Prince and Princess of Wales, while Will and Kate took the titles of Duke and
Duchess of Cambridge.

12. Another rule that has been broken multiple times by many members of the royal family.

14. The tiara must be worn on the back of the head at a 45-degree angle.

17. Diana and Kate have been known to cover their chests with their clutches.

19. The world may know them as Will and Kate, but at home they're William and Catherine.

21. The monarch has to walk away first, then others can follow.

22. Well, this one is obvious, but apparently the rule applies to
fictional thrones too. When Queen Elizabeth II visited the set of
Game of Thrones in Northern Ireland, she turned down the
chance to sit on the coveted Iron Throne to abide by the rules.