There are plenty of drink calculators available online. I think it's worth using several of them and averaging or picking from them, because the final consumption largely depends on factors like the weather, the company, the mood, the length of the party, and many other factors. We can also significantly influence this by having a special theme, such as a gin & tonic bar or a cocktail station. We prepared with a sparkling wine bar, which was a huge success. In total, more than half a liter of champagne was consumed per adult guest, from the welcome drinks to the end of the party, including the toasts. After dinner, the consumption dropped significantly, with guests preferring stronger drinks or spritzers.

If the selection is of good quality – and I’m not talking about super-premium here, but decent bottled wines – then we consider 0,7 to 1,0 liters of wine and champagne per person a reasonable amount, with the following distribution.

Sparkling wine was definitely overrepresented in our case, as we love bubbles and wanted to showcase our favorites to the guests. If this isn't the case, then significantly less will be consumed, and the ratio between light white wine and champagne may even reverse. It’s worth mentioning that if it’s an autumn wedding or cooler weather, and grilling, hamburgers, or steak are on the menu, red wine might be consumed more.

Our recommendation is based on a general scenario. Overall, we suggest minimum 1 bottle per person if we don’t want to run out of wine too quickly.