How much wine is too much in a night?

[winer]

I have found that using a Vacuvin pump and stopper to extract most of the air in the bottle will allow a red wine to be kept "almost" as good as new for several days. It certainly keeps a lot better than if the bottle was just recorked. Extracting the air in the bottle does wonders, in my opinion. I believe this works best with a red wine, but it also helps preserve white wines as well.