Western culture separates the wedding ceremony from the wedding celebration, usually by no more than a few hours. Jewish culture in the first century did too, but between the legal contract of marriage [erusin] signed by the husband and the bride’s father and its celebration and consummation [nissuin] lay a considerably longer interval. The marriage supper and its aftermath might take place weeks, months or years after the signing of the contract.
It might even be indefinitely postponed, assuming we are reading the relevant instructions in 1 Corinthians correctly.