The Christmas countdown is on for Prince George, Princess Charlotte, and Prince Louis - but a royal rule means they will be temporarily separated from their parents on the big day

Another gift rule relates to when the royals open their presents. "These gifts are opened on Christmas Eve, a German tradition the family have adhered to for many decades," Bond said. Somewhat surprisingly, royal children don't eat at the same table as their parents on Christmas Day.

As was the case for Princess Diana, who absolutely despised spending Christmas with the royal family. According to royal biographer Andrew Morton, who wrote Diana: Her True Story, the late princess developed contempt for the traditional royal holiday celebrations during her first Sandringham Christmas in 1981.

The late Princess of Wales once admitted to being 'terrified' by the Royal Family's 'silly jokes' and 'odd behavior' during her first Christmas at Sandringham in 1981