OK, so this is a trivial one, but it's happened a lot recently - when they accept the offer of a drink and then don't touch it. Why? I have mineral water, sodas etc., and it's really beginning to hack me off that I keep wasting them. I don't begrudge giving clients a drink at all, especially in warmer weather, but I've become convinced that some just say yes for the sake of getting their money's worth. Grrr.