Theres always people who will complain about everything changing and the "best" containers are gone so I think doing little by little helps people see that little change is better. I know McDonald's in my town changed the plastic cups to paper and everyone in my town flipped out and got so upset they changed it back within a month. Dont know if that was nationwide but I remember my town was ready to have a riot for not having plastic cups because they "kept the drink colder for longer"