I watched Mulan 2 on Christmas. The best part of the movie was probably the reprise of "A Girl Worth Fighting For".
I was a little surprised to see that Mushu became a minor antagonist in this movie. He spends about half the movie trying to break up Mulan and her fiancee, until he realizes this is a horrible thing to do.
One of the bad things Mushu does is wreck the journey, so the entire group gets lost. This led to an extended version of the "men refuse to stop and ask for directions" joke. It was kind of painful to watch that scene, actually. First, it completely conflicts with the moral of the story, "gender stereotypes are bad". Second, ever since the invention of the GPS, that joke has been outdated. Really, when is the last time someone used a paper map while driving on a road trip?
Overall, it was okay, but certainly not as good as the original.