Swiss people have created rules and customs on how people should behave in public. Through them, the Swiss want to ensure they’re maintaining a safe space where people don’t harm or disturb others.
When meeting someone for the first time in Switzerland, a handshake will do. You deliver the handshake while maintaining eye contact with that person. Breaking eye contact is considered to be very rude. However, if you’ve met someone more than one time, the greeting is more informal. Now, you can kiss them lightly on the cheek three times.
When talking to someone you’ve never met, you should approach them with the family name, or use the formal pronoun (Sie). You’ll continue this formal approach until they tell you otherwise.
When in the street or in the shops, you should greet everyone. This applies to small towns and villages where everyone knows everybody. Swiss people really appreciate this. They’ll make you feel welcome for as long as you’re respectful to them. In which language they’ll greet you depends on which canton you are. Usually, the most used greetings are “Grüetzi,” “Salü,” “Hoi,” or “Ciao.” You can certainly try to speak in English.
Elderly people are highly respected in this country. Therefore, Swiss people require the same from you and other foreigners. You should always respect the elderly by giving them your seat.
If you’re in the mood for gum, try not to chew it while in public. It’s considered a rude and irritable act by the Swiss.
Switzerland has four official languages (German, French, Italian, and Romansh), so the region you are in will affect the language used. It's polite to greet someone in the local language, but if you're unsure, asking if they speak English is generally accepted.
Respecting Dialects: While you don’t have to master the local dialect, making an effort to learn a few words in the local language can go a long way in building rapport.