One weekend in June my wife and I host an extended happy hour to kick start the summer. Every year I am naturally tasked with purchasing beer, wine, and other beverages. In the past I’ve had a difficulty determining how much beer to purchase and serve at our party. Our “happy hour” gatherings generally last until 10:30 or 11:00. At each event I can only hope to purchase the right quantity of beer. The goal is to have as few beer bottles as possible as the last guests depart. I am considering a beer keg vs bottles or cans this year.