The whole "craft cocktail" thing has grown to wild proportions it seems and bartenders are loving it. I have found that if you ask the bartender for something specific they really are excited about making you a special creation. You can ask for something non-alcoholic, not too sugary, bitter, fruity, with fresh herbs, with this, without that.... etc. and they love the challenge of creating something new.
That said, with dinner I prefer just plain sparkling water to not interfere with the taste of my food. I would only want a special drink before dinner.