Honestly it didn't really feel like a YA novel. The characters were supposed to be about 16 but I kept invisioning about 21 or so because of their lifestyles and actions. Except for princess Glisselda; she definitely would have moments of acting like a teenager. Also, the vocabulary of the book was pretty advanced for a teen book in my opinion. There was even a lot of mathematics and politics that I had to take time to sort through.
I will definitely read the sequel... whenever that comes out.