Women should cover their arms when visiting mosques. Bring comfortable walking shoes for sightseeing and walking on desert sand. Sneakers are needed and no open sandals as it is sandy. Sunglasses as well as hats and scarves are recommended as protection against the strong sun. No shorts in the cities and women should never wear sleeveless blouses or shorts at any time.
Beaches are like beaches all over the world, much more casual and laid back so shorts can be worn.
Wall plugs are the round two pronged European type. No adapters or transformers are provided bring your own. The weekly day of rest is Friday. Islam is the principal religion of Egypt. So the weekend is generally Friday and Saturday.