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

"In Port Elizabeth, it is considered disrespectful to not greet someone before starting a conversation. Always start with a simple "hello" or "good day". Avoid making assumptions about people based on their race or ethnicity. South Africa has a diverse population with a complex history related to race and ethnicity. Do not make light of or joke about apartheid. It was a painful period in South Africa's history and is still a sensitive topic for many. Avoid public displays of wealth, as it can be seen as insensitive due to the high levels of poverty in the country. Do not litter. South Africans take pride in their beautiful landscapes and cities, and littering is frowned upon. Avoid discussing politics unless you are well-informed about the local political situation. South African politics can be complex and contentious. Do not take photographs of people without their permission. This is considered disrespectful and invasive. Avoid using offensive language or making derogatory comments. South Africans are generally polite and respectful in their interactions. Do not enter someone's home with your shoes on unless invited to do so. It is customary to remove your shoes when entering a home. Avoid being overly loud or disruptive in public spaces. South Africans value respect for others and their surroundings. Do not ignore queues. South Africans are generally orderly and respectful of queues, whether it's in a shop, at a bus stop or anywhere else. Avoid being late for appointments or meetings. Punctuality is valued in South African culture. Do not touch someone without their permission. Personal space is respected and valued in South Africa," remarked another expat who made the move to Port Elizabeth, South Africa.