I really don't care if some people who've had some meetings together relax afterwards with a small amount of cheese and wine. It's outside, they're at separate tables, and you could argue it's good for morale after a tough day to give a small pick-me-up. It's also a bit like my next door neighbour - he goes off to work sharing a car with a colleague, so he may as well have a pint afterwards with him mightn't he, as any 'damage' has been done. It's the same with this cheese and wine - if you've been in an office with somebody all day, then being in the garden for an hour or two after is not going to make things worse! I can buy that that's an extension of a meeting, in a liberal sense of the word - hell, I've brought biscuits and cake into meetings in the past, even if I'm clearly not posh enough for the finest wines known to humanity.
Now that doesn't mean that the Christmas gatherings don't leave a sour taste however, but this particular one is distracting from more important breaches, and also policy decisions going forward.