Foreign World Cup Visitors in the US Surprised by Mandatory Tipping, Even for Water Purchases

Is tipping mandatory even when buying water in the United States? Visitors from various countries attending the World Cup in the US have reported that the tipping system has increased their expenses, leaving them surprised by this experience. They find it confusing that an additional tip is often expected even for beverages and other small purchases. These visitors argue that customers should not be obliged to tip compulsorily; instead, employers should ensure fair wages for service staff.