Interesting post Mike, I was supposed on the be on the March 19 trip of that same boat. Given that airports were closing March 19th at noon, I was wondering if the trip before came back early and were able to get out.
We did complete the itinerary as planned though the crew found out they all had no jobs a couple days before completion.
With the arrangements to cross the Sudan border in both directions I suspect there was very little room for last minute schedule adjustments.
Cell signal is very intermittent and we were only getting bits and pieces of information until we got close enough to populated areas on shore the evening before we returned to port.
I will say the boat, crew and on-shore management were excellent through the whole process (and for the trip itself). Pretty much everything was sorted before we even got back on land and they made some sensible adjustments to peoples return plans to increase their odds of catching flights. I believe all the others on the boat got home quickly (I was the only one not going back to Germany/Switzerland).
All in all it was a great trip and I hope they can get back in operation as soon as things clear up.
However, as mentioned, my feeling is Egypt is still a long way from their peak.
They are trying to isolate the tourist areas ASAP though and might succeed by drastically limiting access.
But they can't control the tourists coming in unless they plan to quarantine and attempt rapid tests on everybody.
Cairo... there's no way that's going to end well.
Too much density and for every person fully on board with best practices there are 10 that don't know or don't care.