I mean there's no point to it, it doesn't speed anything up.
For example this morning I had a client meeting (saturdays, ugh) so I went to the train station cause it has a mcdonalds and it opens at 630am. They have 5 kiosks there and one person manning the til. People who were ordering from the til were getting their orders faster than people who used the kiosks. I had to wait 10 minutes just to get a coffee and muffin simply because I used the kiosk.
And it doesn't even make sense. I would have assumed all the orders go through the same system regardless of where it was placed but apparently not. apparently people who don't use the kiosk get priority?