I guess if the whole evening is otherwise free; food and wine, I wouldn't begrudge paying for a couple of cokes. Very weird though not to provide alcohol free drinks for the drivers amongst you. The percentage of non drinkers is definitely increasing, I've noticed at such events. Depends on whether you get on with your colleagues socially, I guess. Or whether you'd enjoy an entire weekend away from anything work related, plus a duvet day later.
I have been known to dive out of a common event. Unfortunately, one of my distant aunts, to whom I was very close, was unfortunately extremely and seriously ill that weekend... It was awful and so truly sad.
It was a tough one, but I just had to do it. I had to attend a day/evening with my dearest aunt then I had to spend an entire day duvet day-- at the funeral of my precious aunt, a week later. Very handy for a quick bit of Christmas shopping, on the internet, I have to admit.
The day following the funeral, the problem was not looking my normal knackered self. I actually felt very perky and unusually awake that day. I also had to look very sad, indeed. It was an appearance I had to struggle to maintain all day. Then got home and fell about laughing.
Sorry, ex boss, if you're reading this, but you were on the whole very unreasonable. You seemed to think I was available 24/7. That it was ok for you to have an affair with the HR Manager behind your wife's back (yes, I recognised the signs), oooo, yes, and you'd definitely come back with a spring in your step. However, it was never a two way thing when I was not allowed less than two week's notice to have a day off?! Plus you used to really ridicule you poor wife, not just about her skills about being a mum to twins, but also regarding how she looked! You were beyond cruel. I now really and truly wish I had the guts I have now, to say it to your face in front of our manager. You were a complete AH. And probably still are.