Tipping etiquette in can be confusing for foreigners. While in other countries it’s polite to say thanks when a waiter collects the money, you’ll be horrified to learn that in uttering the word thank you is taken as a sign that you won’t be wanting any change back. This cultural slip-up can get very expensive. What’s more, the waiter will do his or her best to make you feel deeply embarrassed if you try to get anything back after realizing your mistake. For the most part it is common to reward good service with a 10% tip once you have received your change.