It is found in the pi'el form in both places, which indicates a more intensive action than the simple qal. This explains why there are commands to avoid inordinate consumption of wine rather than prohibitions against partaking wine altogether. The Greek word is methuskesthe , which commonly indicates intoxication. We are, as it were, to be filled up with the Spirit, not with wine. As usual, his argument here is unconvincing.
Poetry often exaggerates for artistic beauty.
So likewise, those who tread the grapes are said to tread out yayin . The statement is an effecto pro causa, a substituting of the ultimate effect for the cause, which is not uncommon in Hebrew poetry. Where it is approved we should understand it be nonalcoholic. Surely there were many more. Wedding feasts generally lasted a few days.