There's speculation that the wedding where Jesus turned water into wine was Jesus's own wedding. Otherwise, why would his mom be concerned that the wine had run out?
It was customary that young Jewish men marry, and one of a father's duties was to help his son find a wife and arrange the marriage. Mary and Joseph would have been thought lacking in their parental duties if they had not done this.
It was the wedding of a family member or a close relative, such as James the half-brother of Jesus. Scripture very clearly and specifically articulates that there will be only one wedding ceremony involving Jesus, and that has not yet occurred.
Well, she did say to Him, "They have no wine" rather than "We have no wine." And, when the maitre d' tasted the wine, he called the bridegroom to ask why he "kept the good wine until now". If the bridegroom was "really" Jesus, why not say so?
Mary and Joseph would have been thought lacking in their parental duties if they had not done this.
Concerning Jesus, Mary and Joseph knew what their parental duties were, and they were not the same as for the other siblings. None of the other kids had to be removed from the country to avoid assassination attempts by the government, for example.