Fwiw, I can't remember the last time I bought a physical sim at an airport. Airalo lets me buy an eSim at the departing airport, which means I've got cell data from the instant I arrive. They're not the only company offering this, and I'm sure I could min max and find a more cost optimized service, but it's done me well enough. Depending on the amount of international travel you do, and to where, however, US travellers may have a better time with a carrier like T-Mobile which include international data to a number of countries.