3rd day (Monday sundown to Tuesday sundown), the day of double blessing, when most Jewish weddings are held. Not sure where you found the 7th day except the wedding feast usually lasted 7 days. Nothing in the text that I see confirms when the wine played out. However, that might reveal more about this first sign.
So Mary is... Pharaoh? Not sure what you are trying to say. Joseph was definitely an OT type of Jesus, so I can appreciate the similarity. What relationship does Mary have to a pagan ruler ignorantly worshiped as a living god by his people?
I agree that its significant that these are Mary's last recorded words. The Holy Spirit inspired the writers to record only what was important for Believers, therefore she properly fades from the narrative having played her role.
Eucharist? I don't see it.
The 8 SIGNS of John are connected: 1st and 8th, 2nd and 7th etc.
In the first connected group, they had no wine. And they had no fish even after toiling all night in the last. In the first, Jesus "manifested his glory" (2:11). In the eighth, He "manifested himself" (21:14). Only Jesus can supply Israel true joy, supplies, blessing, and glory.
The waterpots for the "purifying the Jews" reveal the significant errors of religion. (Isaiah 1) The wedding was immediately followed in the narrative by Jesus cleansing the corruption of the Temple amplifying this point - the nation had no understanding of true worship. The correction continues in the explanation of the new birth (Nicodemus in John 3) and worshiping in Spirit & Truth (John 4 - woman at well) as opposed to all the rituals and traditions that men establish and/or corrupt.
“Eucharist? I don’t see it.”
LOL! Of course you don’t. Judas didn’t either.