Our awesome alcohol calculator will determine your needs! It determines how many bottles of wine, beer, and liquor you will need based on your specific guests.We've got you covered in this wedding wine guide, complete with a wedding alcohol calculator so you have one less thing to do before saying "I do." Essentially, It's three drinks per person per hour during cocktails, then one drink per person per hour for the rest of the night. "How much do I need? Ready to buy booze for your wedding? We have a wedding alcohol calculator as well as detailed advice on how to figure out what you need. Calculate how much Alcohol you need for your wedding, event, or party with the fun and easy With A Twist Alcohol Calculator. Here's a straightforward guide to help you figure out exactly how much booze you'll need, what to choose for the type of wedding you're having, and more tips Are you in a season of party and event planning?