When planning an event, the average consumption per person is one drink every 45 minutes. If the event will last 2 hours, plan on 3 drinks per person. Start with your best guess of the drinking habits of your guests. Divide the number of guests between the types of beverages you plan to serve.
For a 4 hour party with 100 guests, you will need approximately 400 drinks: 160 beers, 144 glasses of wine (29 bottles) and enough liqueur for 96 individual cocktails (amounts will depend upon what type of cocktail you serve). If you aren't serving wine, plan on 240 cocktails.
The typical school of thought is to plan one drink per hour per guest. Say you want to calculate how much alcohol for a wedding of 150 for a two-hour reception. That would equal 300 drinks throughout your event. Of course, this number is just an average.
(So for a six-hour wedding with 100 guests, you'll need roughly 600 drinks.) Alex Tornai, party planner for Binny's Beverage Depot, errs on the side of more drinks per person (and we're here for it): “Two drinks in the first hour and one drink per hour for the duration of the evening,” he says.
200 GUESTS: 140 bottles of wine. 350 bottles of beer. 30 bottles of liquor (750 ml)
A good rule of thumb for estimating is 2-3 drinks per person for the cocktail hour, then 1 drink per person per hour for the rest of the reception. So for example - for a cocktail hour then 4 hour reception for 65 guests you'll need to be prepared to serve at least 350-400 drinks!
Over the course of your reception (including cocktail hour), your guests will most likely have about 4 beverages (about 1 per hour). If we do the math here, that is 100 guests x 4 drinks = 400 drinks.
The typical school of thought is to plan one drink per hour per guest. Say you want to calculate how much alcohol for a wedding of 150 for a two-hour reception. That would equal 300 drinks throughout your event. Of course, this number is just an average.
Open Bar for 100 GUESTS: 70 bottles of wine. 175 bottles of beer. 15 bottles of liquor (750 ml) 20 bottles of champagne for toast (optional)
Beer typically comes in 12 oz bottles at 30 bottles a case, though some come in 24 packs. If you have a crowd that likes beer then you may wish to provide 1.5-2 beers per person. With 100 guests you will need approximately 150 – 200 beers, or 5-6 cases.