It was kind of a mess. The employees in my local store didn't seem to know how the promotion worked. Different employees in the same store on the same day told me "have as many buttons as you want", "only one button per customer" and "you can only have a button if you buy something". They also didn't consistently use the same rules for redeeming the winning certificates.
I liked the buttons themselves (and my kids loved them) but it was kind of unorganized.
Loved the buttons and got a great many discounts and $5.00 and $10.00 coupons, but I missed the snowglobes. I hope they will still be Disney snowglobes.