I loved it. It had its flaws and the blatant product placement was annoying but for the whole it was a thoroughly enjoyable film. Some weird bits where it's obvious that some scenes didn't make the final cut, like the mention of divorce in the train but that was also easily overlooked.
The other thing that I thought was a bit stretched out was the reliance on the Aunt to look after the kids, and a kid who is no older than 16 being so dismayed that said aunt wasn't spending the day with him.
A 16 year old. In a dinosaur park. Wtf.
Loads of references to the old films though, very well done. 8/10 for me.