The hotel gave us 'the royal treatment'. [=they treated us like very important people]
When Queen Victoria said, “We are not amused,” she was using 'the royal “we.”'
He comes from 'royal' blood. [=he is in some way related to a king or queen]
(..) Hail King Joffrey. Hail Queen Margaery. I'll drink a toast to my new queen, for there is no one fairer. Dear Uncle, will you share my joy and be my royal cupbearer? Drink long and deep, my noble king, from this cup of sweet wine. The last drink he shall ever take. And vengeance shall be mine. (..)2016 TvShow: Game of Thrones Title: Blood of My Blood Season: 6 Episode 6