Not only is being mannerly ingrained in German culture, it is also retained in the language itself, which has formal and informal methods of addressing people. Additionally, Germans are known to be planners and punctual. Successful dealings with a German start with using the etiquette that a German would use with you.
Formal vs. Informal "You"
If a person is only an acquaintance, it's appropriate to address him with the formal version of "you", which is "sie". If he wishes for things to be less formal, he will say something like, "Können wir du sagen?" He is asking if the two of you can use the informal version of "you," which is "du."
Plan Ahead
Germans plan ahead. They know what they're going to be doing and where they're going to be ahead of time. They expect others to do the same.
Greeting a German
If the person is just an acquaintance, greetings remain formal. When addressing a German with a title like Doctor, it is appropriate to use it along with a firm, quick handshake.
The German Home
It is considered good manners to bring a gift to a German home when invited. Appropriate gifts include chocolate or tea roses.
Business
Germans do not need to have a relationship to do business. A person's academic credentials are extremely important as well as maintaining a respectful distance.
