Open bars sound simple until you’re the one planning one. Most couples start with a vague idea, maybe “an open bar with some signature drinks,” and then get stuck the moment a caterer or bartending company asks how many bottles of what, in what proportions, for how many guests. A cocktail menu isn’t just a list of drinks with clever names. It’s a plan for how a few hundred dollars in liquor turns into an evening people actually remember, without running out of gin at 9 p.m. or drowning in leftover triple sec.
This guide walks through the actual decisions involved: how many drinks to offer, how to balance them, what to do about guests who don’t drink, and how working with a bartending team changes the math.
Start With the Guest List, Not the Drink List
It’s tempting to build a menu around drinks you personally love, but the guest list should come first. A crowd skewing older and more traditional will lean toward wine, beer, and a couple of classic cocktails like an Old Fashioned or a Moscow Mule. A younger, more adventurous group might want something with more personality, like a spicy margarita or a smoked whiskey sour.
A few questions worth answering before picking a single drink:
- How many guests are you serving, and over what stretch of hours?
- Is this an indoor reception with a full bar setup, or an outdoor event where ice, refrigeration, and setup space are limited?
- Does the venue allow outside alcohol, or does it require a licensed vendor to pour?
- What’s the season? A winter wedding calls for different drinks than a July backyard event.
None of these questions are glamorous, but skipping them is exactly how couples end up over-ordering vodka and under-ordering the mixers that actually pair with it.
Pick Two or Three Signature Cocktails, Not Ten
One of the more common mistakes is building an overly ambitious menu. A full cocktail list with eight or ten options looks impressive on paper, but it slows down service, forces bartenders to stock ingredients for drinks nobody orders, and usually leads to at least one recipe getting botched under pressure.
Two or three signature cocktails is the sweet spot for most weddings and events. One can lean sweet, one can lean spirit-forward, and if you want a third, make it something visually distinct, like a drink with a color that photographs well or a garnish that becomes a small talking point. Naming them after something personal, a shared trip, a pet, an inside joke, gives guests something to ask about, which tends to work better than a generic name pulled from a bartending book.
If you want a sense of how professional bartenders structure a full drink list, from classics to house specialties, it helps to look at an existing cocktail menu built for events. Seeing how a professional service organizes proportions and categories makes it easier to scale your own choices down to a manageable list instead of trying to please everyone with variety.
Balance the Menu Across Spirit Types
A cocktail menu built entirely around vodka or entirely around bourbon narrows your audience more than most couples realize. A well-balanced menu usually touches on a few different spirit bases so that most guest preferences are covered without needing a dozen options:
- A clear spirit option, like a vodka or gin-based drink, for guests who want something light
- A brown spirit option, like whiskey or bourbon, for guests who want something with more weight
- A tequila or rum-based drink, especially for warmer-weather events
- Wine and beer as a fallback for guests who don’t want a mixed drink at all
This isn’t about hitting every category for the sake of it. It’s about making sure a guest who doesn’t like gin isn’t stuck with nothing but gin cocktails for the entire night.
Don’t Forget the Non-Drinkers
Somewhere between fifteen and twenty percent of wedding guests typically aren’t drinking, whether for health reasons, pregnancy, personal choice, or simply because they’re driving home. A cocktail menu that treats non-alcoholic options as an afterthought, a lone can of soda at the end of the bar, tends to stand out for the wrong reasons.
A mocktail version of your signature drink solves this cleanly. If your signature cocktail uses fresh lime, mint, and a spirit, the same base without the alcohol usually tastes fine and looks identical on the bar. It signals that non-drinkers were actually considered, not just tolerated.
Working With a Mobile Bar Instead of a Fixed Setup
Not every wedding happens in a venue with an existing bar. Backyard weddings, rooftop events, and outdoor ceremonies often need a full bar built from scratch, which is where a mobile bartending service earns its cost. A professional setup brings portable bars, proper glassware, ice management, and staff who already know how to keep a line moving during the reception’s busiest hour.
In cities like New York, hiring mobile bartenders has become common practice for exactly this reason. A team based out of Brooklyn, for instance, can bring everything needed for an outdoor loft event or a backyard reception without the couple having to source ice, glassware, and a bar cart on their own. It’s worth asking any mobile service you’re considering a few direct questions before booking:
- Are the bartenders licensed and insured, and can they provide documentation for your venue?
- Does the quoted price include ice, mixers, and garnishes, or only labor and alcohol service?
- How many bartenders will be working, based on your guest count?
- What happens if the event runs longer than scheduled?
Figuring Out Quantities Without Guesswork
Couples tend to either wildly overbuy or wildly underbuy alcohol, and both mistakes are avoidable with some basic math. A common rule of thumb is one drink per guest per hour for the first two hours, tapering to about half a drink per hour after that as the crowd settles into a rhythm. For a five-hour reception with 100 guests, that works out to somewhere around 300 to 350 total drinks across the night, split between cocktails, wine, and beer.
For cocktails specifically, a standard 750ml bottle of spirits makes roughly 16 to 17 drinks depending on the pour size. If you’re serving two signature cocktails to a crowd where about 40 percent of guests order one, that’s a useful starting point for calculating how many bottles to order for each drink rather than guessing and hoping.
Common Mistakes Worth Avoiding
A few patterns show up again and again in post-wedding recaps from couples and vendors:
Running out of ice before running out of alcohol is more common than people expect, especially at outdoor events without reliable refrigeration nearby. Underestimating how popular the signature cocktail will be is another frequent issue; a drink that photographs well on social media invites often gets ordered more than the couple planned for. And skipping a tasting before the event means the first time anyone actually drinks the signature cocktail is during the reception itself, which isn’t the moment to discover the balance is off.
A Sample Structure to Work From
For couples who want a starting template rather than building from scratch, a simple structure looks like this:
Signature Cocktail #1: A spirit-forward drink built around the couple’s favorite base spirit Signature Cocktail #2: A lighter, brighter option, often citrus or herb-forward Wine: One red, one white, kept simple rather than offering a full wine list Beer: A local option and a lighter, widely appealing option Non-alcoholic: A mocktail version of one signature drink, plus water and soda
This keeps the bar approachable for guests while still giving the event a personal touch through the two signature drinks.
Frequently Asked Questions
How Many Signature Cocktails Should A Wedding Have?
Two or three is generally enough. More than that slows down service and often leads to ingredients going unused.
Do We Need To Hire A Licensed Bartender For A Backyard Wedding?
It depends on local laws and your venue’s insurance requirements, but many couples hire licensed, insured bartenders anyway to reduce liability, especially for larger guest counts.
How Much Alcohol Should We Budget Per Guest?
A common estimate is one drink per guest per hour for the first two hours, then roughly half a drink per hour after that, adjusted for your specific crowd and event length.
Should We Offer Non-Alcoholic Cocktails?
Yes. With a meaningful share of wedding guests not drinking for various reasons, a mocktail version of your signature drink is a simple way to include everyone.
Is A Mobile Bar More Expensive Than A Venue’s In-House Bar?
Not necessarily. Costs vary by provider and guest count, but a mobile bar can sometimes be more cost-effective than a venue’s per-drink pricing, especially for outdoor events where a venue bar isn’t an option to begin with.
