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

"In Yanbu, it is considered disrespectful to show the soles of your feet or shoes, as they are considered dirty. Public displays of affection are frowned upon, especially between men and women, due to the conservative nature of Saudi society. It is also considered impolite to refuse an offer of coffee or tea when visiting someone's home. Women are expected to dress modestly, covering their hair, arms, and legs. Men should also dress conservatively, avoiding shorts and sleeveless shirts. During the holy month of Ramadan, eating, drinking, or smoking in public during daylight hours is considered disrespectful. It is considered rude to interrupt someone while they are praying. Taking photographs of people, especially women, without their permission is considered a serious breach of etiquette. Discussing politics, especially criticism of the Saudi royal family, is considered taboo. It is also considered impolite to ask about a person's female relatives. In business meetings, it is customary to engage in small talk before getting down to business. It is considered disrespectful to use your left hand for eating or for passing objects to others, as it is traditionally seen as the 'unclean' hand. Alcohol is strictly prohibited in Saudi Arabia, and it is illegal to bring it into the country. Finally, it is important to remember that Friday is the Islamic holy day, and many businesses will be closed," said another expat in Yanbu, Saudi Arabia.