When it comes to children's animation I usually like to cut the film makers some slack for making an attempt at family films. But there is little to love about this film. From the poor choice of music to the head-scratcher story (what exactly was the moral trying to be portrayed here?) to the ultra-cliche characters, this one misses on just about every cylinder.
The real problem was the plot and story line. Exactly what were the writers and directors trying to teach here? That the way to accomplish good is to create extreme bad? Such philosophical nonsense is not a story to teach young children. It's a little difficult to tell who is the good guy and who is the bad here. The sub-plot of the bad-guy competitor is unnecessary to the main story... or is the main story a sub-plot of the evil competitive restaurateur? Hard to tell.
While the sight-gags are understandable for young children (the fart gags might gain a laugh from the 7-&-under audience), they might leave older children and adults cold. (Characters fighting over a lone bathroom because they all have quote "diarrhea" unquote... isn't all that funny.)
The cliche characters and questionable theme serve to make this an hour and a half wasted. The animation is good, the sound is well-mixed (except for the iffy American song choices). Beyond that, one can give this a pass. I don't know whether this is a case of Asian film lost in the Americanization... or if it was simply poor to start with, but it was a yawner by the 20 minute mark and didn't much improve in the remaining time.