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Tipping customs can vary significantly from one country to another, so it's crucial to do a bit of research before you travel. In some places, like the U.S., tipping is expected, while in countries like Japan, it's often seen as rude. • In many European countries, service charges are included in the bill, but rounding up or leaving a small amount is appreciated. Understanding these nuances can help you avoid awkward situations and show respect for local customs.