I don't get it either. What was I supposed to fill? I tried to enter the prize (in several ways and currencies), the place where I go, some general places, some international coffee chains, general nonsense,..., and it still didn't get me through.
All of us smoothie lovers are out here on the sidewalk where we got kicked out the door and landed on our rear ends. Pretty soon there'll be enough of us to form a nonprofit and go save the world on our own.
I entered Latte instead of a smoothie, and again.