The first thing to consider is that baksheesh (tipping) is very much part and parcel of Egyptian culture. Tipping is a way of life in Egypt because most people working have very low wages, so tips are expected in Egypt for almost any high standard of service provided. Service charges and taxes are by default included in any bill. but these fees don't go to people who are serving. So it will be advisable and courteous to directly tip the servers with an additional 10%.