YSK: A 4-hour party with 80 guests needs ~320 drinks. Most…
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YSK: A 4-hour party with 80 guests needs ~320 drinks. Most people buy less than half that, then panic-drive to a liquor store in a suit at 9pm.
**Why YSK:** Most people estimate alcohol by gut feeling instead of math, and they almost always underestimate. Running out mid-event is one of the most common and most avoidable hosting disasters. Doing this 2-minute calculation before you shop saves money on emergency runs and saves your event from an awkward dead zone when the drinks stop flowing.
I watched a grown man in a three-piece suit sprint out of his own wedding reception because the bar went dry at 8:45 PM. Open bar, 120 guests, and he'd bought "a lot." It wasn't enough.
The math is simple, but nobody does it.
**1 drink per guest per hour.** That's your baseline. A 4-hour event with 80 guests = 320 drinks. Not 80. Not "a couple cases and some bottles." Three hundred and twenty. If your crowd drinks heavy, plan 1.25–1.5. Afternoon work event or older crowd, maybe 0.75. But start at 1.
Split it by type. Default is **50% wine, 25% beer, 25% spirits.** Adjust for your crowd — backyard July cookout, bump the beer. Formal dinner, lean wine. The point is you need a breakdown, not just a number.
Convert to bottles:
* 1 wine bottle = \~5 glasses
* 1 case of beer (24-pack) = 24 drinks
* 1 spirit bottle (750ml) = \~16 mixed drinks
For 80 guests over 4 hours at the standard split, that's roughly 32 bottles of wine, 3–4 cases of beer, and 5 bottles of spirits plus mixers.
Add a **10–15% buffer** on everything. This is the part people skip. Alcohol is the one thing where overbuying is not waste — it is insurance. Most stores take back unopened bottles. Nobody takes back the memory of your guests standing around an empty bar at 9 PM.
#education
**Why YSK:** Most people estimate alcohol by gut feeling instead of math, and they almost always underestimate. Running out mid-event is one of the most common and most avoidable hosting disasters. Doing this 2-minute calculation before you shop saves money on emergency runs and saves your event from an awkward dead zone when the drinks stop flowing.
I watched a grown man in a three-piece suit sprint out of his own wedding reception because the bar went dry at 8:45 PM. Open bar, 120 guests, and he'd bought "a lot." It wasn't enough.
The math is simple, but nobody does it.
**1 drink per guest per hour.** That's your baseline. A 4-hour event with 80 guests = 320 drinks. Not 80. Not "a couple cases and some bottles." Three hundred and twenty. If your crowd drinks heavy, plan 1.25–1.5. Afternoon work event or older crowd, maybe 0.75. But start at 1.
Split it by type. Default is **50% wine, 25% beer, 25% spirits.** Adjust for your crowd — backyard July cookout, bump the beer. Formal dinner, lean wine. The point is you need a breakdown, not just a number.
Convert to bottles:
* 1 wine bottle = \~5 glasses
* 1 case of beer (24-pack) = 24 drinks
* 1 spirit bottle (750ml) = \~16 mixed drinks
For 80 guests over 4 hours at the standard split, that's roughly 32 bottles of wine, 3–4 cases of beer, and 5 bottles of spirits plus mixers.
Add a **10–15% buffer** on everything. This is the part people skip. Alcohol is the one thing where overbuying is not waste — it is insurance. Most stores take back unopened bottles. Nobody takes back the memory of your guests standing around an empty bar at 9 PM.
#education
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