300 guests · evening party · 5 hours · standing service · mixed bar. Computed with the engine professional crews use, not a rule of thumb.
Party
What a 300-guest party bar needs
≈ 4809 bar serves for 300 guests over 5 hours on a mixed bar. Water covers bar and table, still and sparkling.
Wine (all types)50 bottles
Sparkling (toast)50 bottles
Beer450 units
Non-alcoholic beer3 cases
Spirits (all bottles)124 bottles
Soft drinks & mixers77 cases
Water1350 bottles
Team on shift16 people
Ice680 kg · 340 bags
Free numbers from the same engine the full planner runs. Pro turns them into the exact order per product, cocktail ingredients, glassware and one shopping list.
Those 4809 serves do not arrive evenly: the opening hour is the fastest, about 1110 serves, because every guest wants a first drink at once; over hour 2 the bar settles into a steady 924 serves an hour; through hours 3–5 the pace eases to around 925 an hour as the crowd winds down. The totals above already carry this curve, so the bar is stocked for the surge, not for the average.
Field note: the drivers order first
Wherever beer is served, Green Jar adds a case of 24 non-alcoholic beers per 100 guests without being asked. Designated drivers and pregnant guests hit the bar early, and the event that has an answer for them is the one they remember.
Adjust it to your event
Same engine, live. Change the crowd, the bar or the hours and recalculate.
Guests
Seated dinner served?
Bar service
Duration
Party
Frequently asked questions
How much alcohol do I need for 300 guests at a party?
Plan for about 4809 bar serves over 5 hours. On a mixed bar that becomes roughly 50 bottles of wine, 450 units of beer, 124 bottles of spirits and 77 cases of soft drinks and mixers, plus 1350 bottles of water.
How much wine do I need for 300 guests standing?
The standing rule is 1 glass per guest, split across white, rosé and red, and a 750 ml bottle pours 6 glasses. Scaled to 5 hours that is 50 bottles for 300 guests.
How many bar staff do I need for 300 guests?
5 bartenders at the recommended level and 16 people in total, counting barbacks, runners and glass collectors. The comfortable level for the same event is 18.
Plan your full bar: bottles, cocktails, shopping list.
The free calculator gives staff, ice and totals. Pro turns them into the exact order per product and one Excel your supplier can read.