I just spent a day in Cairo. I didn't notice any problems that would make a cruise line want to cancel a port call.
They told us tourism was off by 70%. So I think they want to do everything possible to get the tourists back.
We did notice that Egypt is becoming more fundamentalist. You see many more women with head coverings and more men with beards. So who knows what might happen after the elections. But for now I think it's safe for tourism.