When traveling in Nice, be sure to use basic French phrases such as "merci" (thank you), "s'il vous plaît" (please), and "bonjour" (hello). French culture values politeness, so always greet shopkeepers, waiters, and hotel staff. A modest tip in restaurants and cafes shows respect. It is also good manners to be quiet on public transportation and not to eat in public places. It is considered polite to dress respectfully and modestly on religious or formal occasions.