I don't drink - maybe two beers a year, max. No wine (though I cook with it) and nothing harder (except for cooking/baking). When dining out, my preference is for water (actually, that's my preference at home, too), though occasionally I'll order a soda or an iced tea.
I've friends who like to gather for various Happy Hours and while I like to join them (and have become quite addicted to certain HH offerings), I always feel "odd" when I don't order a drink but partake of either the free buffet or the reduced-cost items from the menu. No-one's (server-wise) has ever said anything to me, but I have gotten some decidedly not-approving looks when I've ordered a soda rather than a "drink." I dread to think what kind of a look I'd get if I when into one of these places on my own and didn't order a drink but did order discounted food. (I do tip well at HH - usually >30%, thinking that I'm making-up for the reduced prices.)
Comments? Ideas? Insight into restaurant policies?