Cairo International Airport is where most trips start. The smart move is to have your eSIM installed before you board your flight home country side. When you land and switch off airplane mode, your MegaEsim connects to the Orange network and you have data right away. No looking for a kiosk, no handing over your passport, no line at arrivals.
This matters in Cairo. SIM sellers at the airport often want to keep your passport for a day to register the card, which is a real problem when you need to check into a hotel or meet a driver. An eSIM skips all of that. You just turn it on.
For a short city trip the 1 GB for 7 days plan at $2.02 is plenty if you mostly use WiFi at your hotel. If you plan to use maps and ride apps all day, step up to the 3 GB for 15 days plan at $5.32.