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

"When visiting Lake Como, avoid wearing revealing or beachwear clothing when not at the beach or pool, as Italians tend to dress modestly and stylishly. Refrain from speaking loudly in public places, as Italians appreciate a lower volume in conversations. Do not expect shops and businesses to be open during the afternoon, as many close for a few hours for a riposo or siesta. Avoid discussing sensitive topics such as politics, religion, and the mafia, as these can lead to uncomfortable conversations. Do not expect to have dinner before 7:30 pm, as Italians typically eat later in the evening. When dining, do not ask for ketchup or other condiments that are not typically used in Italian cuisine, as this may be seen as disrespectful. Finally, always greet people with a polite "buongiorno" (good morning) or "buonasera" (good evening) and say "grazie" (thank you) to show appreciation for their hospitality," said another expat in Lake Como, Italy.