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

"In Hradec Kraloveublic, it's important to respect the local customs and traditions to avoid any cultural faux pas. Here are some tips: Avoid discussing sensitive topics such as World War II, the Soviet era, or the country's communist past. These topics can be sensitive for some Czechs. Do not refer to the Czech Republic as Czechoslovakia. The country split into the Czech Republic and Slovakia in 1993, and referring to it by its old name can be seen as disrespectful. Do not assume that everyone speaks English. While many Czechs do speak English, especially younger people, it's polite to ask if they speak English before starting a conversation. Avoid being overly loud or boisterous in public places. Czechs tend to be reserved and value their personal space, so try to respect this. Do not leave a mess when you are eating or drinking at a pub or restaurant. Czechs take pride in their cleanliness and expect others to do the same. Avoid being late. Punctuality is highly valued in the Czech Republic, and being late can be seen as disrespectful. Do not forget to say "Dobrý den" (Good day) when entering shops or restaurants, and "Na shledanou" (Goodbye) when leaving. It's considered polite and is expected. Avoid tipping less than 10% at restaurants. It's customary to leave a tip of around 10-15% in the Czech Republic. Do not wear your shoes inside someone's home. It's customary to take off your shoes when entering a Czech home. Avoid interrupting someone while they are speaking. It's considered rude to interrupt someone in the middle of a conversation," remarked another expat who made the move to Hradec Kralove, Czechia.