We saw this yesterday. I thought it was really good, especially the exchange where (after they find the ransacked faun's house) Peter says, "We need to call the police!" and one of the girls says, "These were the police!" (Not exact wording no doubt.)
However, no matter how brave etc. they depict it, I can't help but think running your outnumbered troops into hordes of monsters is a rather silly use of men and materiel. If I were King Peter I would've proudly said, "Run and hide! Later we'll attack the White Witch's supply chain!"