I am interested in an Egyptian sim card for a 10-day trip that also includes 36 hours in Zurich (in addition to the 10 days we are in Egypt). We are flying home from CAI through connections in AMM to DOH then direct home to BOS. I'm with AT&T, and currently have their $10 Day Pass which will cover the 36 hours we're in Zurich. But that plan doesn't work in Egypt, Jordan, and Qatar, and I would have to switch to their Passport plan for which 1GB is $60 and 3GB is $120 (a one-time charge for 30 days).

I have 2 old iPhones (a 5s and a 6 - one for me, one for my daughter traveling companion) that could be used instead of our current phones if I went the Egyptian sim card route. Would we have to have the Egyptian tour guide take us to a store upon arrival to get this set up? Or should I go the eSim route with GigFly or Ubigi?

What are your opinions as to my options?