There are a lot of things we know and accept about the royal family. We know all about the perfect curtsy and the proper Windsor wave. But there are a lot of strange family traditions that most of us just pretend don’t exist. Like, what is the last name of Prince George and Princess Charlotte? And for that matter, did you know that Prince Harry’s name isn’t Harry, and Meghan Markle’s name isn’t Meghan? There are rules that affect every action of the royal family’s life, including what they need to pack when they travel. Everyone needs to bring a change of black clothes, but only the Queen makes sure to bring a slice of cake with her. You know there are a lot of rules when it comes to throwing a royal party, but you might have forgotten that the royal family makes an entrance from behind a secret room hidden behind a mirror.