Activities:

Grand Egyptian museum: Open to the public. Not all the exhibits are open YET (but may open around June), but nonetheless still worth the visit as it is spectacular

Egyptian Museum of Civilization: Museum with the most exhibits, here is where you can see the mummies as they have not YET been transferred to the grand egyptian museum

Khan al khalili - historical market district, shopping

Citadil of Cairo: Super elegant and beautiful building with tours

Nile boat cruise - 

Foods to try:

Shawarma, Koshary (Egyptian national dish), Home cooked meals such as Macarona Bashamel + and Molokhia and Makshy (stuffed grape leaves, squash, cabbage). Stuffed Pigeon is popular in egypt. You will be in Egypt in the beginning of mango season and in the midst of watermelon season. These fruits are safe as they can be peeled, but give them a chance, and find out for yourselves how the fruit is in the eastern hemisphere >>> what we have 

Dessert: Basbousa, Kounaffa, Oum ali, Baklava, rice pudding 

Travel outside Cairo:

Luxor + Aswan : stunning ancient egyptian city. 1 hour plane ride (you need 1-3 days to get the most out of it)

North coast beach/Alexandria : Lit beach moves 4 hour drive/train. Alexandria is more for historical stuff and food, north beach more for beach vibes and parties. Lots of people will be traveling to north coast beaches or dahab after eid

Sharm el sheikh/Dahab

Touristy vacation spot on the red sea: 1 hour plane ride. best snorkeling you can find.