Disclaimer: I am in the industry . So yesterday/Christmas day at a family party I had some wine. I just filled 1/4 of a glass, and then added the same amount of water. Note: that is how the Roman senate drank their wine, so they would not get drunk (as the alcohol killed the various microbes in the water). This while virtually everyone else was drunk on wine or beer, as there was very little pathogen free water in the cities.
so anyway, I sipped that amount of wine in that social environment over aprox an hour, holding it primarily in my mouth, to absorb the effects of the alcohol. An hour or so later I did it again. So over a two hour period I had basically a half a glass of wine, and quite frankly it was little more than mildly intoxicating, with no adverse affect at all.
I AM NOT advocating drinking alcohol. I am however not so naive to think that people are going to obstain completely. Just be smart and quite frankly, you don't need to get drunk in life, to enjoy life