I read somewhere that it was supposed to animated like Alvin and the Chipmunks, and other live action animated movies. I wish I could find that again cause I would post the link here right away.
I like the animation of A&O, but I thought it would be interesting to see them in realistic animation with live action backgrounds and human characters since it seems to rare in animated movies. So I could go for this just because of how uncommon live action animated movies are (that I know of).