Just in time for the weekend, we “stumbled” across this super helpful, interactive tool on the ever-fabulous Real Simple Web site. Just plug in your event’s size, type of bar set up you’re planning, the time of day, and voila! A specific breakdown of numbers of bottles of each type of spirit. The best part are the in-depth explanations with each result offering exceptions (such as planning for more white wine in summer, more red wine in winter) and how to calculate for variances (heavy drinking crowd?). There are also money-saving tips for streamlining the cost of serving alcohol at your particular event.