Free drinks if we win: how to run the promotion without the risk

It is one of the oldest tricks in hospitality: "If our team wins tonight, the next round is on the house." With the World Cup in its knockout stage this July, plenty of bars across Europe are running some version of it. The promotion fills the room, but it hides a problem — the better it works, the more it costs, and the bill only lands if the team actually wins. This is a case study in turning that open-ended liability into a number you can plan around.

The problem: a cost you cannot budget for

Say a pub in Prague promises a free half-litre to everyone in the room if the national team wins its match. The manager has no idea in advance whether that bill will be zero or several hundred euros, because it depends on a result nobody controls. That is the trap: the promotion's downside is largest exactly when the night goes best — a packed room and a win.

Let us put rough numbers on it. Suppose the pub expects around 150 guests if the match draws a crowd, each taking one free drink that costs the bar about €1.50 to pour. If the team wins, the giveaway costs roughly 150 × €1.50 = €225. If the team loses, it costs nothing. The manager is effectively holding a bet: "€225 due, but only if we win."

The hedge: buy the outcome you are afraid of

A prediction market lets the pub buy the exact outcome that creates the liability. On a market like "Will the team win tonight?", a Yes share pays out 100¢ if the team wins and 0¢ if it does not. If Yes is trading at 30¢, the market thinks there is about a 30% chance of a win — if that idea is new to you, our primer on what a prediction market is covers it in two minutes, and reading the odds explains why a price in cents is just a probability.

To cover a €225 giveaway, the pub buys enough Yes shares to pay out €225 on a win. At 30¢ per share, each share returns €1 if the team wins, so it needs €225 worth of payout — that is 225 shares at €0.30 = €67.50 up front.

Now trace both outcomes:

• Team wins. The pub owes €225 in free drinks, but its 225 Yes shares also pay out €225. The giveaway is fully covered. Net promotion cost: the €67.50 hedge.
• Team loses. No free drinks are poured, so there is nothing to cover. The €67.50 hedge expires worthless.

Either way, the pub's cost is fixed at €67.50 — decided before the whistle, not by the scoreline. An unpredictable liability has become a known line item, the same way a business insures against any other event it cannot control.

The unit economics

The €67.50 is not really a loss — it is the price of certainty, and the promotion should more than earn it back. If those 150 guests each buy just two paid drinks over the evening at a €2 margin, that is 150 × 2 × €2 = €600 in extra gross profit on a night that might otherwise have been quiet. Against that, a fixed €67.50 hedge is a rounding error.

The expected value also works in the pub's favour when the hedge is honestly priced. The market's 30¢ says a win is worth 30% probability; the pub's expected giveaway cost is therefore about 30% × €225 = €67.50 — which is exactly what the hedge costs. In other words, the market lets the pub pay the fair expected value of its promise up front, instead of gambling on landing on the cheap side of it. What it buys is not a discount but the removal of variance: no surprise €225 bill, ever.

Where it breaks — and how to keep it clean

A few honest caveats. Real markets have a spread and a small fee, so the hedge costs a touch more than the theoretical fair value — build that in. Estimate the giveaway generously; if 250 people show up, a hedge sized for 150 leaves a gap. And keep the promotion's terms crisp ("free drink if the team wins in 90 minutes") so they map onto a single, cleanly resolving market rather than a vague "does well tonight". The tighter the wording, the tighter the hedge.

This same playbook scales well beyond a pub. A hotel can hedge a "free night if it rains" weekend, a shop can hedge a "money back if our team wins the cup" sale, a festival can hedge a weather refund. Anywhere a business ties a giveaway to an uncertain public event, a prediction market can convert the open-ended risk into a fixed, plannable cost. The broader trading boom behind all this is worth a look too — see how the World Cup pushed prediction-market volumes to a record month.

You do not need to risk real money to see whether the maths holds. On Outcomer you can practise sizing a hedge like this with virtual funds — pick a market, work out the payout you would need, and watch how it settles. It is the cheapest way to learn the mechanics before there is ever a real bar tab on the line.