Narrowly, the reference is simply to romance and weddings, which will not happen, ever. More broadly, the reference is to the start of a new family and so the building of the future with the procreation of a new generation. But fallen Babylon, thrown away, has no future, ever.
23 and the light of a lamp will shine in you no more, and the voice of bridegroom and bride will be heard in you no more, for your merchants were the great ones of the earth, and all nations were deceived by your sorcery.