Article continues below advertisementKing Charles' royal household is governed by a series of "insane" unwritten rules insiders tell OK! members of the family are expected never to break in public - from avoiding selfies to even the precise way a teacup must be held.Charles, 77, who ascended the throne following the death of Queen Elizabeth II in 2022, oversees a monarchy steeped in centuries of tradition, where protocol continues to shape the behavior of senior figures including future monarchs Prince William, 43, and Kate Middleton, 44.