What cultural faux pas should I try to avoid making in Bamberg?

"In Bamberg, punctuality is highly valued, so avoid being late for appointments or meetings. It's considered rude to interrupt someone while they are speaking, so wait for your turn to speak. When dining out, it's customary to wait for everyone's food to arrive before starting to eat. Avoid discussing sensitive topics such as World War II, the Holocaust, or the Nazi era, as these topics can be very uncomfortable for Germans. It's also considered impolite to stare or point at people, especially those who may look different or foreign. In public places, keep your voice down to avoid disturbing others. Germans value their personal space, so avoid standing too close to someone or touching them unless you know them well. When using public transportation, remember to validate your ticket before boarding to avoid fines. It's also customary to greet shopkeepers when entering and leaving their shops. Finally, remember to respect the environment. Littering is frowned upon and recycling is taken very seriously in Germany," remarked another expat in Bamberg, Germany.