Cultural tips on Berlin, according National Geographic:
Greeting: Don’t smile away. Most Berliners have been brought up to think that smiling is a sign of superficiality. Don’t be deterred by stern faces, cold welcomes, and impassive service in shops and restaurants. Most people are actually much more genial than what they let show—politeness and warmth are just not the German Volk’s best attributes.
Tipping: Tip fairly. Servers receive a fixed salary, so it’s usual to just round up the bill to the nearest euro, although American tipping habits are catching up in Berlin too. Generally speaking, the higher the bill, the higher the tip with a good 10 percent being the norm in proper restaurants.
Paying: Berlin women are expected to be strong and independent, hence self-sufficient. To buy them a drink or a meal could be interpreted as macho and most women will insist on splitting the bill—which is a very German habit in general. Most Berlin servers will ask you right away whether you wish to pay “together” (zusammen) or “separate” (getrennt).
Following the rules: Be ready to learn. Berliners are often described as lecturing and haughty know-it-alls. However aloof they may seem, they’re not indifferent. Are you possibly feeling like you’re being talked down to or lectured about traffic rules, or something else you were spotted doing wrong? Just take it as a sign of concern and care.
