Fail and no buts about it
As someone who delivered pizzas etc in college, this will fail miserably. How will the drone know he's delivered the payload to the person who is expecting it? Is the an IoT app for this tom foolery?
Cue complaints: Hey you dropped my burrito from 50m, now it's a quesadilla!
Yes, my coat, the one with the Chipotle menu in the pocket.