Yup....went there for three weeks in 1984. It was certainly a different world then, but here are a few things...
Ancient Egypt was amazing, Enjoy the great pyramids (4000 years old) on the outskirts of Cairo. Go inside one, if you still can. Take a camel ride!
Go to the "Kahn", the shopping bazaar....be sure to barter. The museum in Cairo is a great take as well.
Be sure to go to "Upper Egypt", which is really up the Nile....south of Cairo. Upper Egypt has the Valley of the Kings....where you can see some 2500 year old artwork in the tombs. The tombs are 1500 years younger than the pyramids....and are basically underground...caves. This is where King Tut's tomb is.
Be ready to witness poverty like you've likely never seen in the US. Cairo makes New Your City seem rural. It is very congested, air pollution a real issue. Enjoy Egypt's past....
It is a trip worth taking.
PS....some of Aruba's palm trees originated in Egypt.
Just want to add that the traffic is horrible, so watch out
Also, don't expect to get alcohol served in restaurants. You will be offered tea everywhere, including all the shops! Only in the western hotel chains (Sheraton, Hilton, Marriott etc.) they serve alcohol at the premises + in Hard Rock Cafe Cairo.
We were there 4 years ago, and had an amazing trip. Well worth it!
Are you going to Cairo or another place in Egypt? Red Sea area is totally different..