You don't even necessarily have to interact with a human if there _is_ an issue. The Chipotle app which I use to order has a support chat (which I'm pretty sure is automated). If I'm missing an item or have pretty much any issue, they issue a refund for that item, no questions asked. Pretty crazy. (Also very convenient, and shockingly pro-consumer).

I'd say there's a slight difference. The food is prepared without your interaction in an automat. You would just walk into the store and open the door for the food you want. Everything is pre-made but replenished only when someone takes it.