> It's so nice to not have to spend the first day of a trip wandering around looking for a SIM shop
I went to three different countries this summer and all of them had sim cards available on your way out of the airport. In Armenia, it was in the baggage claim.
This is sometimes true. Like in Tunisia where they give a free SIM in baggage claim. But I crossed a lot of land borders through west africa where it would be a day or two of traveling before I could find an official store that had a physical SIM.