Because I'm not so sure, particularly at this time of year. My boss is having a little do for his staff on Thursday and we've just been discussing drinks etc and he wants me to buy 10 white wine, 10 red wine, 4 cartons of orange juice and 6 bottles of lemonade.
I know its hard to judge these things but 20 bottles of wine for 60 people doesn't seem much to me, and I think it would very embarrassing to run out.
What do you think.