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

"In Windhoek, it is important to be respectful of the local culture and customs. It is important to dress modestly and to avoid public displays of affection. It is also important to be aware of the local language and to be respectful when speaking to locals. Additionally, it is important to be aware of the local customs and to avoid making jokes or comments that could be seen as offensive. Finally, it is important to be respectful of the local wildlife and to avoid disturbing or harming any animals," remarked another expat in Windhoek, Namibia.