How Much Food and Alcohol Do You Actually Need for a Wedding?
Most guidance on wedding quantities is a single vague rule of thumb applied to every wedding regardless of length, service style or crowd. The real numbers depend on three things: how long the bar is open, what you're serving, and how much your particular group drinks.
Here's how to work it out properly, and what to hand your caterer when they ask for final numbers.
Start With Hours, Not Headcount
The most common mistake in drink planning is calculating per guest without accounting for duration.
The standard working assumption across the catering industry is roughly one drink per guest per hour, with the first hour running higher because everyone arrives thirsty and takes a drink immediately.
A workable baseline:
- First hour: about two drinks per guest
- Every hour after: about one drink per guest
For a hundred guests over a six-hour reception, that gives roughly 700 drinks. Not a hundred, and not "a few cases," which is what people tend to imagine.
Then adjust for your actual crowd. This is where the rule of thumb fails and your own knowledge helps.
- Heavier-drinking group? Add fifteen to twenty percent.
- Lots of guests who don't drink, or many children? Reduce accordingly, but don't reduce your total by the full proportion, because non-drinkers still consume soft drinks at a similar rate.
- Daytime wedding? Consumption generally runs lower.
- Long gap between ceremony and dinner? Cocktail hour consumption goes up noticeably.
Splitting Across Wine, Beer and Spirits
Once you have a total drink count, the split depends on your crowd and there's no universal ratio. A common starting point for a mixed group is roughly half wine, a third beer, and the remainder spirits and non-alcoholic, then adjusted for what you know.
Practical notes that matter more than the exact ratio:
A standard bottle of wine pours five to six glasses. So 350 glasses of wine is roughly 60 to 70 bottles. Do this conversion before you order, because thinking in glasses and buying in bottles is where people under-order dramatically.
Sparkling for a toast is one glass per guest, and a bottle pours six to eight smaller toast pours. You need far less than most people order.
Non-alcoholic is consistently under-ordered. Designated drivers, pregnant guests, people who stop drinking mid-evening, and anyone who wants water between drinks. Plan for real options rather than one jug of lemonade.
Ask about corkage before buying anything yourself. A venue corkage fee can erase the entire saving of supplying your own alcohol, and it's frequently charged per bottle.
Whether to Buy Your Own
This depends almost entirely on two venue policies, so ask both questions before you plan anything.
Are you allowed to supply your own? Many venues don't permit it at all.
What's the corkage? If it's charged per bottle, multiply it by your bottle count and compare against the venue's own pricing. Sometimes supplying your own still wins. Often it doesn't.
If you can buy your own, ask about return policies. Some suppliers accept unopened returns, which changes the calculation entirely because you can over-order safely rather than guessing tightly.
Factor in the labour. Buying your own means someone transports it, chills it, and takes the empties away. That someone should be named before you decide.
Food Quantities by Service Style
Plated service is the easiest to plan because portions are fixed and your caterer works from your final count. The variable is the split between courses, which depends on the meal choices your guests submit.
Buffet requires more food overall than plated, because portion control passes to your guests. Caterers typically build in a margin for this, but confirm it rather than assuming.
Family style sits between the two and generally produces the most leftovers, since dishes are placed on tables in quantities designed not to run out.
Canapés at cocktail hour: the common planning figure is around four to six pieces per guest for an hour before a full dinner, and considerably more if the cocktail hour is long or if it's replacing a course.
Late-night food is one of the better-value additions if your reception runs past eleven, though plan for a portion of guests rather than all of them, since many will have left or won't eat again.
The Guest Count You Give Is Not Your Invite List
Three numbers get confused here, and the difference between them costs real money.
Invited: everyone who received an invitation.
Confirmed: everyone who has said yes.
Final count: the number you give your caterer, usually seven to fourteen days before the wedding depending on your contract.
Your final count should include your vendors if their meals are contracted, which surprises couples regularly. Photographers, videographers, coordinators and band members frequently require a meal under their contracts, and it appears on the catering invoice.
Ask your caterer two things explicitly: by what date the final count locks, and whether you can adjust it downward after that date or only upward. Most contracts allow increases and not decreases, which means the number you give is effectively a floor.
Dietary Requirements, and Why They're Not Preferences
This distinction matters operationally, and caterers need it made clearly.
An allergy is a safety issue. It needs to be flagged by name, linked to a specific seat, and communicated to the kitchen separately from the general meal counts.
A dietary choice such as vegetarian, vegan, kosher or halal is a menu question. It needs a count and a suitable option, but it's a planning matter rather than a safety one.
A preference is neither, and shouldn't be presented to your caterer as a requirement.
Collect all of this with the RSVP, not separately. Asking twice roughly doubles your follow-up, and the second request has a much lower response rate than the first.
Give the kitchen names and table numbers for allergies, not just a total. A caterer who knows there are three gluten-free meals but not where they're sitting has a service problem on the night.
What to Confirm in Your Catering Contract
Four items that regularly surprise couples at final invoice:
- Service charge and gratuity, whether included or added, and at what percentage
- Vendor meals, whether required and at what rate
- Cake cutting fee, if you're bringing an outside cake
- Corkage, if supplying any of your own alcohol
These are exactly the kind of line items that arrive late and individually feel too small to renegotiate. Ours added up to over a thousand dollars past our budget about four months out, not through any single bad decision, but because nobody was totalling them as they appeared.
Frequently Asked Questions
How much alcohol do I need for 100 wedding guests? Plan roughly two drinks per guest in the first hour and one per hour after. For a six-hour reception with a hundred guests, that's around 700 drinks, adjusted up or down for how much your particular crowd drinks.
How many bottles of wine do I need for a wedding? A standard bottle pours five to six glasses, so divide your planned wine servings by five to be safe. Converting glasses into bottles before ordering is where most couples discover they'd badly under-ordered.
Is it cheaper to supply your own alcohol for a wedding? Only if your venue permits it and the corkage fee is low. Corkage charged per bottle can erase the entire saving, so multiply it by your bottle count before deciding.
How many canapés per person for a wedding? Around four to six pieces per guest for a one-hour cocktail hour before a full dinner, more if the hour runs long or if canapés are replacing a course.
Do I need to feed my wedding vendors? Frequently yes, because many vendor contracts require it. Check each contract and include those meals in the final count you give your caterer, since they appear on the catering invoice either way.
Where the Numbers Come From
Every figure above depends on one thing being accurate: your meal counts. And meal counts are where the spreadsheet earns its place, because they change every time someone responds.
The Ultimate Wedding Planner handles this by connecting the two. Guests record their meal choice on their own row in the Guest List, and the Menu and Drinks tab counts them automatically by option, beef, chicken, fish, vegetarian, vegan and kids' meals, updating live as responses come in.
So when your caterer asks for a breakdown by course, you read six numbers rather than counting rows. And when three more people reply the following week, the numbers move on their own.
The tab also keeps a dietary notes section covering vegetarian, vegan, gluten-free, allergies and children, sitting alongside the counts. The allergy line is the one worth filling carefully, because that's the information your kitchen needs by name and by table rather than as a total.
One honest note: the tab tracks and counts, it doesn't calculate your alcohol order. Use the per-hour arithmetic above for that, and use the live confirmed guest count from your dashboard as the number you multiply.