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

"In Mecca, it is important to respect the Islamic religion and its customs. Non-Muslims are not allowed to enter the holy city of Mecca, as it is considered a sacred place for Muslims. Dress modestly at all times, covering arms, legs and head, especially for women. Public display of affection is frowned upon and can be considered offensive. Avoid consuming alcohol or pork, as they are strictly prohibited in Islam. During the holy month of Ramadan, refrain from eating, drinking, or smoking in public during daylight hours out of respect for those who are fasting. Do not take photographs of people without their permission, especially women. It is also considered disrespectful to take pictures of religious sites without permission. Avoid discussing sensitive topics such as politics, religion, and sex. Criticizing the Saudi royal family, the government, or Islam is considered a crime and can lead to severe punishment. Always use your right hand for eating, greeting, and giving or receiving items, as the left hand is considered unclean. During prayer times, which occur five times a day, respect the religious practices by keeping noise to a minimum and not walking in front of those who are praying. Remember that Friday is the Islamic holy day, so many businesses will be closed. Lastly, always show respect and patience, as the pace of life in Mecca can be slower than what you may be used to," remarked another expat who made the move to Mecca, Saudi Arabia.