Beer-guzzling fans risk drinking parts of Moscow dry, with some bars and restaurants in the Russian capital saying they are running low and having to wait longer than usual for fresh supplies.
Moscow has been transformed by the World Cup, with singing, chanting and beer-swilling fans overwhelming some of the packed bars and restaurants around the Kremlin and Red Square.
"We just didn't think they would only want beer," said one waiter at a upscale eatery in central Moscow who asked not to be identified for fear of scaring off future customers.
The waiter said his restaurant ran out of draft lager on Monday and deliveries are taking longer than usual, at least 24 hours, because suppliers' stocks are also running low.
"There are really a lot of people in Moscow ... and they are all drinking," he said. "It's hot, and it's football."
Beer sales in Russia have fallen by around a third over the past decade as duties have risen and rules been tightened on sales and advertising. Brewers had not been expecting a major reversal of the trend this year.
Baltika, the Russian unit of Carlsberg, said although there was an increased risk of supply disruption during the World Cup, its business had not been affected.