As it turns out, I needed major warranty work in December after the onboard charger stopped working. Although the car could still be driven (and probably charged with a level 3 charger) that was a large enough issue that Kia was willing to transport my vehicle to Round Rock and back for the warranty work. So both the minor non-working window motor and the major non-working onboard charger were resolved. My local Southwest Kia provided a loaner car for the week, but presumably I only got that because they have the same ownership as the Round Rock dealership.
So the bottom line is that if you live outside of range of an "EV certified" dealership, you may be responsible for taking the vehicle back for warranty work if your car is drivable, but if it needs major warranty repairs then Kia transports. It's in the warranty really, but even if someone read that before buying, it would not be clear that most dealerships aren't "EV certified".