How Much Alcohol for 100 Guests: A Complete Shopping Guide
For 100 guests at a four-hour party with a full bar, buy 7 cases of beer, 20 bottles of wine, and 4 bottles of spirits — around 310 drinks total, costing roughly $1,600 to $2,400 self-stocked.
That number looks low to most people, and it's because of one thing: 100 guests is not 100 drinkers. Once you subtract kids, designated drivers, and the roughly 30% of adults who don't drink, you're stocking for about 62 people, not 100.
Below are complete shopping lists for five different 100-guest scenarios, plus the ice, mixers, and glassware most hosts forget until the day before. If you want the numbers run against your own drink split, the party drink calculator does it directly, and the full guide to alcohol per person explains where these ratios come from.
The math for 100 guests
Step 1: How many actually drink
| Guest breakdown | Count |
|---|---|
| Total guests | 100 |
| Under 21 | 12 |
| Adults | 88 |
| Adults who drink (70%) | 62 |
That 70% figure is the general-crowd average. Shift it for your specific guest list:
| Crowd | Drinking share | Drinkers of 88 adults |
|---|---|---|
| Younger (21–35) | 85% | 75 |
| General mixed ages | 70% | 62 |
| Older (55+) | 60% | 53 |
| Corporate | 55% | 48 |
| Family event, many kids | 60% | 53 |
Step 2: How many drinks
Two in the first hour, one per hour after.
| Duration | Drinks per drinker | Total for 62 drinkers |
|---|---|---|
| 2 hours | 3 | 186 |
| 3 hours | 4 | 248 |
| 4 hours | 5 | 310 |
| 5 hours | 6 | 372 |
| 6 hours | 7 | 434 |
Step 3: Split and convert
At a 50/30/20 full-bar split across 310 drinks:
| Type | Drinks | What to buy |
|---|---|---|
| Beer (50%) | 155 | 7 cases of 24 |
| Wine (30%) | 93 glasses | 20 bottles (5 glasses each) |
| Spirits (20%) | 62 shots | 4 × 750 ml (16 shots each) |
Five shopping lists for 100 guests
Wedding reception, 4 hours, full bar
Weddings run about 10% above baseline — people stay longer, toast more, and celebrate harder.
- Beer: 8 cases (mix: 4 light lager, 2 IPA or craft, 2 non-alcoholic or seltzer)
- White wine: 12 bottles
- Red wine: 8 bottles
- Sparkling for toasts: 15 bottles (a 750 ml pours 6–8 toast-sized flutes)
- Vodka: 2 × 1.75 L
- Whiskey or bourbon: 1 × 1.75 L
- Gin: 1 × 750 ml
- Rum: 1 × 750 ml
- Tequila: 1 × 750 ml
Estimated cost: $1,900–$2,800
Backyard BBQ, 5 hours, beer-forward
Casual outdoor events skew younger and hotter, so more people drink and they drink faster. Assume 75 drinkers × 6 drinks = 450 drinks, at 70% beer.
- Beer: 13 cases, or 2 half-barrel kegs plus 2 cases in reserve
- White wine and rosé: 18 bottles
- Red wine: 5 bottles
- Spirits: 2 × 1.75 L (vodka and whiskey), plus tequila if margaritas are happening
- Hard seltzer: 3 cases — increasingly the default summer drink
Estimated cost: $1,400–$2,000
Cocktail party, 3 hours, no full meal
The highest-consumption scenario per hour. Light food means faster drinking, and the crowd is standing rather than seated. Assume 65 drinkers × 4.5 drinks = 290 drinks, spirits-heavy.
- Beer: 4 cases
- Wine: 15 bottles (10 white, 5 red)
- Vodka: 2 × 1.75 L
- Gin: 1 × 1.75 L
- Whiskey: 1 × 1.75 L
- Tequila: 1 × 750 ml
- Vermouth, bitters, syrups: for whatever cocktails you're pouring
Serve appetizers throughout, not just at the start. Food genuinely slows consumption, and the same logic that governs dessert and cake for 100 guests applies here — plan food and bar off the same headcount rather than sequentially.
Estimated cost: $1,700–$2,600
Beer and wine only, 4 hours
The budget option, and perfectly appropriate for most events. 310 drinks at a 70/30 split.
- Beer: 9 cases
- White wine: 12 bottles
- Red wine: 7 bottles
- Hard seltzer: 2 cases (covers guests who'd have ordered a cocktail)
Estimated cost: $900–$1,400
Roughly 40% cheaper than a full bar, and most guests won't notice the absence. The open bar versus beer and wine comparison works through when the upgrade is actually worth paying for.
Corporate event, 3 hours
Lower drinking rate, and moderation is the point. 48 drinkers × 4 drinks = 192 drinks.
- Beer: 4 cases
- White wine: 10 bottles
- Red wine: 6 bottles
- Spirits: 2 × 750 ml, if any
- Non-alcoholic: significantly more than a social event — this crowd drinks less and expects good options
Estimated cost: $600–$1,000
What everyone forgets
These items don't feel like part of the alcohol order, which is exactly why the run to the store happens.
| Item | For 100 guests |
|---|---|
| Ice | 150 lbs (200 lbs if outdoors in summer) |
| Bottled water | 200 |
| Soda and mixers | 12–15 two-liter bottles |
| Juice | 6 liters (orange, cranberry) |
| Tonic and soda water | 8 liters |
| Limes | 25 |
| Lemons | 20 |
| Cups | 250 |
| Cocktail napkins | 300 |
| Bottle openers | 4 (they vanish) |
| Corkscrews | 3 |
| Trash bags | 8 |
| Coolers or tubs | 4–6 large |
Ice is the item that ruins parties
150 lbs is 15 to 20 bags, and it requires somewhere to live. A typical home freezer holds two bags. Everything else needs coolers, which means buying the ice the morning of, not the day before.
Half of it goes into drinks and half into chilling bottles in tubs — and the tub ice melts faster than anyone expects on a warm afternoon. Full logistics are in the ice quantity guide, including how to keep a tub from turning into lukewarm water by hour two.
Non-alcoholic guests still need drinks
Your 38 non-drinking guests need about 2 servings per hour, which is roughly 300 servings across a four-hour event once you include drinkers taking water and soda too. Warm cans on a folding table is a poor showing — one good mocktail or a decent sparkling option costs very little.
Cost summary for 100 guests
| Bar type | Self-stocked | Catered |
|---|---|---|
| Beer and wine only | $900–$1,400 | $1,500–$2,500 |
| Full bar, standard | $1,600–$2,400 | $2,500–$4,500 |
| Full bar, premium | $2,800–$4,000 | $4,500–$8,000 |
Catered bar service typically runs $25–$45 per person for a standard open bar. The Knot's Real Weddings Study puts average wedding catering at $80 per person nationally, with bar packages billed on top of that.
Where self-stocking goes wrong
The saving is real — roughly half — but it comes with conditions. Many venues prohibit outside alcohol or charge corkage that erases the difference. You're also handling transport, chilling, ice, service, and cleanup, which is a genuine job on the day.
Ask your retailer about returns before you buy. Many US stores accept unopened bottles back on event purchases. If yours does, order 20% over and stop worrying about it entirely.
Staffing and logistics
Bartenders: one per 50 guests, so two for 100. Expect $35–$50 an hour plus tip. Beyond speed, a professional pours consistent measures — which is where self-serve bars quietly go through twice the spirits you planned for.
Bar setup: two service points for 100 guests, or one long bar with two bartenders. A single narrow bar creates a queue that guests will remember.
Timeline:
- Two weeks out: order alcohol, confirm returns policy
- Three days out: buy mixers, soda, water, non-perishables
- Morning of: buy ice, cut garnishes, chill beer and white wine
- Two hours before: set up bar, fill tubs, get water station visible
- 45 minutes before the end: last call, put out coffee
Chilling takes longer than you think
Beer needs about three hours in a fridge or 30 minutes in an ice-and-water tub with salt added. White wine needs two hours refrigerated. A tub of ice with no water in it chills slowly — add water and a handful of salt and it drops the temperature far faster.
Hosting 100 people responsibly
A crowd this size means you personally cannot track how much anyone has had. Build the safeguards into the setup instead.
Serve real food throughout, not just at the start. Put the water station somewhere people pass, not in a corner. Stop bar service 45 to 60 minutes before the end and put out coffee and dessert. Have rideshare details visible near the exit.
Keep in mind that a standard drink — defined by NIAAA as 12 oz of beer, 5 oz of wine, or a 1.5 oz shot — is smaller than most home pours. Self-serve guests routinely pour double, which means your 310-drink plan may deliver considerably more alcohol than the number suggests. Hiring bartenders solves this quietly.
If you're hosting at home, it's worth knowing where your state stands on social host liability, which in some states extends to guests who drive away impaired.
The number that matters most on this page is 62, not 100. Count your actual drinkers first, then multiply by hours, then convert to cases. Everything else follows from that.
