USE A TOUR
While you can travel solo, I think doing a tour in Egypt is a safer and more enriching experience especially if you are going to see all the historic sites. You will get so much more out of these impressive landmarks.
TRAVEL INSURANCE
If you are going on a tour, you will be required to get proof of insurance and to be honest, it is never a bad idea anyways. Make sure to purchase in advance.
HEALTH CONCERNS
Do not drink the water. You do not need to worry about malaria or yellow fever. Traveler’s diarrhea is common so come prepared with some electrolyte packets and anti-diarrheal medications (trust me!).
DRESS AND ACT CONSERVATIVELY
Women should be prepared to dress conservatively. This includes being clothing that covers the shoulders, mid-section and bottoms to the knees. It is hot here so invest in some long skirts so there is some airflow but you are covered. Your guide will tell you if ok to get away with some short sleeves in certain very touristy areas but it is most respectful to cover your shoulders in most places.
NO ALCOHOL ON THE STREETS
Be cautious on where you are drinking alcohol since you are in a Muslim country.
SUN AND BUGS
Bring sunscreen, hats and sunglasses for the intense sun. Bring mosquito repellent.
HAVE COPIES OF YOUR ID
Make sure to have copies of your passport.
PDA
You will want to limit your forms of public displays of affection. LGBTQ travelers will need to be especially discrete here.
NO DRONES AND CAMERA RULES
Most sites have a no drone policy and in fact most places even outside of the sites have it banned. Best to just leave it at home. You will note that many sites require additional fees for photography so just be prepared to pay it if you want photos of certain sites.