Things they got right:
a. the mice
b. Trumpkin (even if they didn't freaking use his name)
c. the single combat
d. the ending
Overall the film was very much a disappointment, especially after how faithful and well-done
The Lion, the Witch, and the Wardrobe was. There were a few changes I did approve of; I liked that Glozelle and Sopespian actually didn't like Miraz instead of just being greedy bastards, I could hardly argue with a bigger role for Queen Prunaprismia, and I totally loved how they collapsed the ground under the Telmarines. Oh, and the subtle Princess Bride reference was pretty sweet (and looking at the IMDb page, there's a Lord Montoya listed). And it was obviously important to change the order around somewhat so the tension could be kept up.
Honestly, most of the actual changes would have been okay. It's just that there were
so many of them. And some of the most glaring ones were at the beginning. I
hated that instead of a diplomatic but naive kid with some common sense like in the book, Caspian was more of a grown-up idiot. And WTF with Trumpkin automatically recognizing Susan's horn and everyone assuming it would bring the old kings and queens? The worst change, in my opinion, was
having the White Witch show up. Yes, I adore her. But she's DEAD. They say they're going to summon her in the book, but they never actually do, and I suspect that even if they hadn't been killed first, they wouldn't have succeeded. Because she's DEAD.
Bleah. I could go on, but I don't feel like it! So there.