In many places-and Arabic cultures are good examples-hospitality is taken very seriously. You risk giving offence if you don´t accept a sincere offer of food, shelter, or assistance. At the same time, males must be careful when talking to or about someone’s wife or female relative. Hospitality does not extend that far. Penalties can be harsh for trying to make a move on a woman.
Also be cautious about expressing excessive admiration for someone´s property, like a piece or jewellery or artwork. The owner may insist that you accept it as a gift. If you refuse, you risk giving offence. If you accept, you may be expected to reciprocate.
Aaaah, it´s a complex world out there.