Just finished reading it this morning. I gave myself a whole week (I usually read most books in a day or two) and I wished it had been much longer.

As others have said, a lot has been left undeveloped, and if anything can be said in critisism that would be it.

But these are children's books and I think there is enough to chew on for most people.

A two year's wait for the last one is far too long, though.