How the Cocktailhire Wedding & Party Drinks Planner works

Scope

What the planner is designed to answer

The tool produces practical purchasing estimates for a private party or event. It covers standard spirits and mixers, wine, Prosecco or Champagne, cubed ice, working glassware and a Cocktailhire-level bartender benchmark. It can also use the outward part of a UK postcode to look for ice and glassware suppliers in the maintained mainland supplier list.

It does not build a Cocktailhire event menu, reserve stock, check date-specific availability or replace a supplier quote. The downloadable plan is guidance to help a host start an order, not a promise that every guest will drink at the same pace.

Wedding planning use

What couples and wedding planners can use it for

Couples can use the calculator to turn a changing guest count and drinks-service window into a clearer first shopping plan, then share the PDF with their venue, family and suppliers. Professional wedding planners can use the same inputs to make early client briefs more consistent, compare revised guest counts and begin ice or glassware supplier research near the venue.

The calculator is deliberately not a replacement for the venue or planner. Wedding-specific questions such as corkage, table wine, beer, soft drinks, children, venue stock, refrigerated storage, delivery windows and glass washing still need to be confirmed. Publishing that boundary keeps the calculated quantities useful without pretending to know details the host has not entered.

Starting point

How the total number of party serves is estimated

The planner starts at 1.2 drinks per guest, per party hour. The whole total is rounded up, then divided across the drinks selected by the user. Moving one drinks-split control adjusts the others so the selected categories continue to total 100%.

This is an event-planning allowance rather than a measured prediction for an individual guest. For a daytime party, the downloaded plan tells the host to reduce the resulting totals by 30%. That reduction is not applied silently because the host may know that their event will run at a different pace.

Drinks shopping

How spirits, mixers, wine and fizz are converted

If the host selects a pre-party Prosecco or Champagne reception, the tool adds one extra hour at the same 1.2-serve planning rate for every guest. Those serves are added to the party fizz allocation rather than deducted from the normal party period.

The UK Government permits 25ml or 35ml measures for gin, rum, vodka and whisky, and 125ml or 175ml glasses of still wine among the specified quantities. The planner uses 35ml spirits and 175ml wine consistently so the shopping output has a visible basis. See the official specified-quantities guidance.

Ice

How serving ice and chilling ice are kept separate

When spirits and mixers are selected, serving ice is calculated at 0.25kg for every planned party serve. This deliberately follows the total pressure on the bar rather than only the number of spirit serves. If no spirits are selected, the serving-ice result is reduced to 20% of that amount for incidental use.

Chilling ice is added separately at 2kg per large bucket for every active hour. A selected one-hour reception also extends the chilling period by one hour. The public planner specifies cubed ice throughout so the output remains simple to purchase.

Glassware

How many working glasses are included

The glassware total equals all planned party serves plus any separate reception serves. One working glass is allocated to each planned serve because the calculator assumes there will be no glass washing during service. Highballs are allocated to spirits and mixers, wine glasses to wine, and flutes to fizz and reception serves.

This is intentionally a working-service quantity, not a prediction of how many glasses will be broken or left in bedrooms, gardens or other areas. A host who expects slow collection or high breakage should discuss extra stock with the hire company.

Bartenders

What the staffing number means

The staffing result uses Cocktailhire's working benchmark of one bartender for every 50 guests, rounded up to the next whole person. It reflects Cocktailhire's own service pace and should not be presented as a universal staffing rule for every bar company, venue or service style.

Worked examples

What the base model produces for common guest counts

These examples use five hours of normal party service, a 34% spirits, 33% wine and 33% fizz split, no separate reception and no chilling buckets. They are included so the calculation can be checked without completing the form.

The glassware figures assume no washing during service. The ice figure is Cocktailhire's public planning allowance, not measured consumption. Change the inputs in the calculator for the actual event rather than treating this table as a fixed order.

Nearby suppliers

How postcode supplier matching works

A postcode is optional. When supplied, the full postcode is reduced to its outward area before location lookup and is not retained in the plan. Supplier results are filtered by the category and fulfilment choice before distance is used for ordering. The maintained database currently covers mainland UK suppliers only.

Supplier pages, coverage and terms can change. The PDF therefore asks the host to confirm current stock, delivery charges, collection arrangements, dirty-return terms and final pricing directly with the supplier before placing an order.

Evidence and limits

What has and has not been validated

Cocktailhire reviewed 15 anonymised historical event packs and shopping lists on 20 August 2026. Those records supported the historic planning process and the one-bartender-per-50-guests working benchmark. They did not contain measured post-event consumption, returned stock, wastage or a reliable record of shortages and surplus.

The review therefore does not claim that 1.2 drinks per guest per hour is proven consumption. It remains a transparent operating assumption for planning. Better future validation would need opening stock, returned stock, actual attendance, breakage, service interruptions and documented shortages or surplus from completed events.

Privacy and measurement

No lead form is hidden inside the calculator

The calculator does not request a name, email address or phone number, and it does not require an account. Cocktailhire measures only non-sensitive actions such as which tool was opened, whether a plan was completed, whether the PDF was downloaded and whether a supplier link was followed. Guest counts, drink selections and postcodes are not included in those measurement events.