So apparently the folks over at Sony Animation really thought Cloudy with a Chance of Meatballs needed a second visit.
A great family film will connect with kids and adults alike. A piss-poor family film will miss the mark and go for cheap laughs, cheap thrills, and generally speaking miss every mark a filmmaker needs to invest in understanding. So as I see it, Cloudy 2 is an okay family film. It mostly lacks any creative insight, but probably still connects very well to at least half of its audience. I can only assume children eat this up and there is just enough there to get the parents through it. But it is the kind of film that is unsustainable. Just a quick buck that will mean almost nothing to anyone in about ten years.
So, while I like the original very much, Cloudy 2 is not a must see. If you're really bored one night and you need something easy to watch, you can give it a chance... though I can think of at least fifty movies off the top of my head that would be better suited to that scenario.