Well, people can get married anyway they want. They can trained a parrot to lead them through their vows. They can train a dog to wag his tail in a sort of sign language. They can stand together and tap dance out their vows. Freedom is what it is. Everybody is free to be themselves or whatever. A person is free to be peculiar.
So, a couple in Japan chose a robot to conduct their wedding? No joke? It must have been a civil wedding? Maybe this is the future, who knows? The clergy of tomorrow and / or the civics officals could all be robots, followers of the school of the robotics, that could be founded on the example of the robot from the 1951 version of "The Day The Earth Stood Still." -- and tomorrow there could be a world order with robots in charge. And we will have to do what robots say or ZOOM, BOOM, the loomy-loon. Loomy-loon? Sounds like "loony room?" A robot presiding over a wedding, seriously, sounds like something from a loony room, in my opinion.