You need to know going in that it's got plenty of cheese, and a lot of the fighting and action are very campy.
It felt like a Disney movie in that way, definitely geared towards kids.
Here's a good Spritle clip to give you an idea:
http://movies.yahoo.com/movie/1808406004/video/7633142/It's more video game than Anime to me, and reminds me of Tron that way (but it's not that good.)
It does have some good elements to it though, as one of the main themes is art vs commerce.
Do you do what you do because you love it, or do what you do to make money?
Once money enters the equation, can it still be art?
That theme, and how it plays out in the story was probably my favorite thing about the movie.
It's also a good coming of age story, and it teaches how important family is.
If you're looking for a feel good family movie where good triumphs over evil, this is a good movie you should see.
As long as you expect it to be more fun than serious, you'll come away happy.
