Well, I don't drink, but... I always try and have some decent soft drinks with me. Some proper orange juice (not this from-concentrate Minute Maid cack) and some Irn Bru (Scotland's other national drink...) Generally, you get left with Coke/Fanta (which I loathe) or overpriced water.

I'm seeing an increasing trend of hotels putting in minibars with an empty section labelled 'your space'. Good stuff, this.