content: Personally, I see people piling up waiting for their order happening already. And they can already hear my order. And they animate and make unfamiliar the menu enough that I can't tell what my options are at a glance. Except for the interface itself, these are all issues already at fast food burger joints around me, at least when the employees don't take pains to correct them or they don't have plenty of waiting bench space near the pickup spot.