For those who just want to see the trailer, go to 2:28 on the above clip. The trailer itself is about 30 seconds long. I agree that a trailer for a short that's only seven minutes long seems a bit much, but Disney knows how to market.
I foresee Cinderella making a ton of money the first weekend because of the Frozen short, as well as stories about lots of people walking out once the short's over because that's all they came to see.
I may go see Cinderella just so I can see Frozen Fever.
YouTube.
Brilliant poster is brilliant.