Taking photos in some areas are prohibited. Take your shoes out and women cover their heads and hands before entering holy places such as mosques, tombs, churches, even some homes and so on. Friday is a holy day for Islam is generally observed as closed day.
How strict is the dress code in Egypt?
Pants, t-shirts, and long-sleeve shirts are acceptable as clothes to wear in Egypt. Avoid wearing shorts or sleeveless shirts to fit in with local customs. Men do not need a head-covering scarf to enter mosques.