A party of 150 is big enough that the bar needs real planning, and small enough that a few smart choices make a big difference. Whether you are hosting a wedding, a milestone birthday, or a company celebration, here is how to plan a bar that keeps up with your guests.
Start with the menu
The type of bar you choose shapes everything else.
Beer and wine: The simplest setup. Fast to serve and easy to stock.
Beer, wine, and a signature cocktail: A popular middle ground that feels special without slowing the line.
Full bar: Spirits, mixers, and cocktails. The most choice for guests and the most work for bartenders.
How many bartenders for 150 guests
For beer and wine, two bartenders can usually serve 150 guests well. For a full bar or a cocktail menu, plan on three bartenders, or two bartenders plus a barback who restocks ice, glassware, and bottles. If your crowd will all arrive at once, such as right after a ceremony, consider adding a second bar station to split the line.
How much to have on hand
A common starting estimate is about one drink per guest per hour, with a little more in the first hour. For a four hour event with 150 guests, that comes to roughly 600 drinks. From there:
A 750 ml bottle of wine pours about five glasses
A 750 ml bottle of spirits pours about sixteen 1.5 ounce drinks
Plan 1 to 2 pounds of ice per guest, more on warm days or outdoors
Adjust for your crowd. A late night dance party drinks differently than an afternoon reception, and many guests now choose non alcoholic options, so stock good ones.
Glassware and setup
Plan on two to three glasses per guest over the evening, or have a staff member washing and cycling glassware. Each bar station needs a sturdy table, a back bar for stock, access to ice storage, a trash and recycling bin, and ideally a nearby power outlet. Place the bar away from entrances and the dance floor doorway so lines do not block traffic.
Pace the night
Open with something quick to pour, like wine or a batched signature cocktail, to handle the first rush. Pass water during the evening, serve food alongside drinks, and set a clear last call about 30 minutes before the end of the event.
Check your permits
In Washington, bartenders should hold a MAST permit. If you are hosting a private, invitation only event and providing alcohol for free, you may need a banquet permit from the Washington State Liquor and Cannabis Board, unless your venue or caterer's license already covers the event. Selling drinks requires a different license, so ask your venue first.
Let us run the bar
At Northwest Premier Event Staffing, we believe hospitality is a craft. Our bartenders help hosts plan quantities, set up a bar that flows, and serve with warmth and good judgment all night.
Planning a bar for your event? Tell us your guest count and menu through our Request Us form and we will recommend the right bar team.
