We've just came back from Pizza Hut. They have gave us a sealed envelope and we can't open until we go back there between 4th Jan and sometime in Feb. There is a guaranteed prize within, but if it's opened before then, the envelope is void....
What a brilliant way for attracting customers in their quiet spell... We'll definitely be going back because the prizes are pretty awesome. So my 13 year old said!!!

An excellent piece of marketing... Don't you agree....?