A few years ago in the US a couple entered the church for their wedding and did a rap dance. The video of that was on YouTube, and now wedding entrance dances are very popular in many Western countries.
So this Tv commercial made everyone laugh. The actors are called "look-a-likes" and in the Uk many look-a-likes can work a lot in commercials/pop videos/supermarket opening ceremonies etc I think the Camilla look-alike is particularly good.
Nobody gets offended by this kind of commercial - and I am 100% sure the royal family enjoyed it themselves. Very different from Japan!
And here is a video about the making of the CM; interviews with the actors and director etc. It looks fun!
Me? Tonight? Watching the wedding on 4 hours of NHK?
No way! I think I'll go see a movie.