Bring some crackers, nuts, and other snacks for the long tours. Tea bags and some instant coffee, together with your water boiler are also very helpful in your hotel room. Also bring a plastic bag to protect your equipment from the fine sand dust in the air. Processing in Egypt is not advised. Filtersare useful because of the bright sunlight.
Fast films are useful for the inside of temples and tombs.
Military zones, public works, other strategic places and most tombs cannot be photographed. The hotels have very good laundry and cleaning services at low rates, so you may travel light. Save your laundry for Aswan. It is always useful to purchase one of the general travel guides for the country to which you are traveling. A book list will be sent to you soon.