I have a question...I'm sure it has been addressed somewhere, but I've looked through quite a few posts and haven't found a good idea yet...We are having an open bar, only for 2 hrs during the reception and with a limited drink menu, vodka, rum, whiskey, and beer with mixers of course. Our wedding is Irish so the siggy drink is of course, a black and tan.The problem is, although we've invited guests and their children, I know that most will not bring their children, but the consumate planner in me wants to plan "Just in case". I will be having a bartender, but how do I tell the alcoholic drinks from the plain sodas??? I have a few sketchy almost tweens that would just love to sneak a taste, but I would prefer them not to.I thought of different cups for the alcohol, but we're offering pint glasses for the beer and smaller mixed drink cups (highballs) for the other mixed ones. Anyone know where I can find other cups or what other cups I should use? Our colors are black, white and royal blue. I'd rather not the blue solo cups, but if I have too....We're still on a budget and I don't want my $$$ to go to tables full of 1/2 empty drinks that no one knows who they belong to and 20 extra opened 2 Liter bottles. Not to mention how well the blue solos photograph......I know I sound snarky, but .....ideas puleeeze!!!Thanks guys!