>>241, >>245, >>246, >>249 Other previous drinking examples -- odd dancing and DJ'ing at last year's BAFTAs, and (my fave) his in absentia (or absinthe?) acceptance of Elle's Man of the Year award: https://www.youtube.com/watch?v=Px4Xq6UDYLc
I suspect that drinking less might also have to do with (as he's said) he "can't just go out for a drink" anymore now that he's much better known.
But I agree that he must have needed all the booze he could get to survive Taymerica. There was also a story about him sneaking away with the other guys at some point for some beers. (And he did have a death grip on that huge wine glass!)