drone deliveries at golf course

https://money.cnn.com/2018/09/05/technology/drone-delivery-golf/index.html

"He's explained to them how much cheaper a drone is when compared to the price of a beverage cart.
Palmiscno has also heard from the neighboring softball complex, whose organizers are open to drone deliveries from his course's restaurant. Palmiscno envisions athletes sitting around after a game, drinking beer, and having food dropped from a drone."

I still think of this as a gimmick.  How does the drone know who's getting the delivery?  Can someone reach up to the drone and get sliced and diced?  Can they steal the drone?  I have lots of questions still.