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

"When visiting Zagreb, it's important to avoid discussing the Yugoslav wars and the country's communist past, as these topics can be sensitive. It's also considered rude to refuse food or drink when offered by a host, as hospitality is a big part of Croatian culture. Avoid making negative comments about the country or comparing it to other former Yugoslav countries, as Croatians are very proud of their nation. It's also considered impolite to take photos of people without their permission, especially in rural areas. When visiting churches or other religious sites, dress modestly out of respect. Lastly, Croatians appreciate punctuality, so try not to be late for appointments or meetings," remarked another expat in Zagreb, Croatia.