Drinking expensive wine or champagne. Clients often spend, what are to me, silly amounts of money on alcoholic grape juice and bubbly alcoholic grape juice. I always accept when offered by a client and pretend to enjoy it but honestly don't see what the fuss is about. I usually take a few sips to be sociable and then just leave it before it can give me a headache. I doubt any of them would notice if I switched their glass with something from the cheapest bottle or box or whatever from the supermarket. Can anyone other than professional wine tasters really tell the difference? It all tastes the same to me.