What we called in english for that kind of marriage?

what we call in English for a kind of marriage where a set of bride and groom,say 25 are going to marry instantly at a stage infront of a large crowd.What we called in english for that kind of marriage?
I think you might mean ';multiple weddings';, where lots of couples get married together, all at once. There have been weddings like this in the Mormon church, I believe.What we called in english for that kind of marriage?
Instantly? means you are going to get married very quick, in that case it would be an ';elopement';





But you said in front of a large crowd which would mean a ';wedding';





Usually both don't happen at the same time
I am guessing that you are referring to a ';wedding';.