I don’t think the wedding was a parable but I think the wedding was his sisters wedding, resason why Mary was concerned about how smoothly it went a worldly view, not a good wedding if the wine runs out before the end of the reception.
Parables can be historical true yet hide the spiritual understanding needed to reveal the gospel. Without parables Christ spoke not. He concealed the understanding from natural man called the hidden mana in Revelation giving the honor to Christian as a kingdom of Priest to search them out.
We can see that in a parable that the translators call Proverbs 25:2 . He gives us the honor of being called kings
Proverbs 25:2 It is the glory of God to conceal a thing: but the honour of kings is to search out a matter.
Its the same wine that was changed for water, a word used to represent the unseen holy Spirit .The wine represents any thing that intoxicates or invigorates to include his love for us. I think we should search for the spiritual meaning as well as the literal seeing they work as one to present the gospel.