Celebrating the bride and groom is not just a mitzvah, but a hedge against the disappearing act of encroaching age.

An ultra-Orthodox Jewish bride enters to the men's section of the wedding, to fulfill the Mitzvah tantz, in which family members and honored rabbis are invited to dance in front of the bride ...

It was also considered an act of piety to dance in honor of a bride at a Jewish wedding. We know that rabbis vied with each other for this Mitzvah and honor.