I have to agree with those who don't care:
He's a professional, and has been a professional long enough to know exactly what he can and can't do to his body. There is a long list of great players, from Bird and McHale to Barkley and Jordan, who have been known to drink heavily and then have fantastic games.
Midnight isn't late for someone who is used to his work day ending right around that time.
A couple of drinks isn't likely to do much to a man that size who is used to drinking.
As alcohol goes, red wine is pretty healthy. We know he's adopted healthy eating/exercise as his pet cause... he's not going to go on a public binge while constantly preaching moderation in PSAs.
He wasn't doing anything reckless or dangerous. He was playing in a very low stakes (for him) card game... like lots of people, including his teammates, do all the time. Hope they weren't using the deck that got TA, Big Baby, and Rondo sick.

Looks to me like he spent a completely tame night out.