Etiquette in different countries of the world

In many countries around the world, tips are included in the bill. This is true for the Czech Republic, France, Hungary, and Spain. On average, it’s about 10-15% of the bill. However, this rule doesn’t work for all European countries. In Austria, tips are only given to waiters who do their job well. And there is an unwritten rule in Austria: if a customer has asked for their bill 3 times and never receives it, they can leave the restaurant without paying