I think it's more for conformity. No, "okay, your 7 AM flight pickup will be 2.25 hours prior... your 8 AM pickup is 3 hours ahead... your 10 AM flight pickup is 3.15 hours prior..." DME allows for picking up at multiple resorts, driving among those resorts, driving to ths airport. Yes, it even allows for traffic issues at 4 AM. Guests have other options not included in the resort price.