Mobile customers are a kind of second-class citizen for McDonalds, though they have instructed the drive-through salespeople to always lead with "Will you be using the mobile app today?". MCD uses location tracking to only submit the mobile order once you are in range of the store.
Should probably add that in-store customers are third-class citizens; drive-through orders without customization get priority.
Should probably add that in-store customers are third-class citizens; drive-through orders without customization get priority.