The best dinner parties we've hosted are when I've forgotten to put water glasses on the table. Hydration, exclusively with beer and wine, seems to make for a good ol' night! I have no empirical evidence for this, pretty obvious though I think it is - although, I suppose our neighbour, Claire, falling asleep (booze induced not my boring stories) with her face in the pudding, on a non-water glass evening, could perhaps count as empirical evidence!
Admittedly, we were much younger then and who cares about a hangover when you're young! Everything is about the night, without even a care for tomorrow. Nowadays, quite the reverse. I'm getting jumpy a few hours before the night has even started, concerned about the morning after the night before! 😱