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

"In Bern, it is considered rude to be late for appointments or meetings, as punctuality is highly valued in Swiss culture. It's also important to respect the Swiss love for quiet and peace, so avoid making loud noises in public places, especially on Sundays when many activities are restricted due to noise regulations. When dining, it's considered impolite to start eating before everyone has been served their food. Also, keep in mind that tipping is not customary in Switzerland as service charge is usually included in the bill. In conversation, avoid discussing personal matters, as the Swiss tend to be private and reserved. It's also considered impolite to ask about someone's salary or wealth. When using public transportation, it's important to give up your seat for elderly or pregnant passengers. Also, remember to validate your ticket before boarding to avoid fines. In general, the Swiss value cleanliness and order, so littering is frowned upon. It's also important to respect the environment by not picking flowers or disturbing wildlife in public parks. Finally, when greeting someone, a firm handshake while maintaining eye contact is the norm. Kissing on the cheeks is reserved for close friends and family," remarked another expat in Bern, Switzerland.