"Why should the cleaning staff have to pick up after rich children"?? So they can pick up for poor children. Then the question is, what is the beench mark to decide who is poor and who is rich or are we all who buy food from there, considered rich. But before anything else, why is cleaning staff there otherwise...I mean why are they hired cos next would be, dont drop anything and if u do then clean that up too...so again what would the cleaning staff do?

Self service counters are for picking the food by yourself, if I understand right, not beyond.