I went with the gf last night to see How To Train Your Dragon 2. It was her idea, and, after her making me watch the first, I was actually pretty keen. They're not quite dinosaurs, but dragons are just as cool. It actually had some pretty dark moments which also made it more appealing to a 22 year old dude. I thoroughly enjoyed it and, although I wouldn't see it again at the movies, would watch it if it was on tv or we had the dvd lying around. It, for one, beats the hell out of Frozen (which is completely overrated). I'd suggest going to see it if you have kids or want something to see with the other half.
I'd give it a 6.5 out of 10. It's not the best movie ever made, but for a "kids" movie, it's well worth seeing.