Apparently, kings are deep, so deep that commoners can't understand them. Clearly royalty wasn't as inbred back then, because I'm pretty sure that Prince Philip is a certifiable idiot. Also, if you take away evil people, you'll secure his throne. A lot of things would be secure if there were no evil people, but all right.
More about kings: don't brag to them and don't stand in the places of great men or sit at the head table if you haven't been invited there. That should go for every house you're invited to.
Only eat until you're satisfied. Don't wear out invitations or try to cheer up sad people. Send postcards. Control your temper. Why are these not grouped by themes?