Ron
My brother is like that. He is lovely but slightly nutso about alc and babies.
My mum offered to take his baby on the night of their wedding so that they could, ahem.. have a wedding night. He said fine, as long as she does not drink.
No probs, said my mum, I will just have a glass of wine with my meal, and the champagne for the toast.
No, he stated, if you cannot abstain completely then we will just have to keep her in our room with us.