I tend to just get water, because if I get pop it fills me up before the food arrives (I don't drink a lot of pop -- I don't like the carbonation, how the bubbles feel in my mouth
). I will very, very rarely have a mixed drink, but it has to be fruity because I don't really like the taste of alcohol. If I'm out for breakfast, I'll have a cup of coffee or an espresso, but only one. I get water with all my meals; it's usually the only thing I finish!