I cannot wait to see "The Rise of the Guardians." It's interesting that this movie has come out at the same time that "Ava's Secret Tea Party" was released and focuses on the same characters, but in two very different ways. Is "The Rise of the Guardians" too intense for your children? "Ava's Secret Tea Party" has a much gentler setting!
Here's the trailer for the movie. If it's not your 'cup of tea,' perhaps my book will be!