The times I’ve used Southwest, it’s been for National Parks trips and there really isn’t a place to get a reliable cell signal in Death Valley unless you’re stuck back in your hotel room or cabin on their mediocre wifi. (Up side for that trip was that even though EBCI got us B numbers on the way home out of LAS, enough of our fellow passengers were still hung over enough that the entire A groups staggered right past an essentially empty exit row section. Score!)