Me and my wife saw it in the theaters this past weekend and loved it. The 3D was well done, but honestly, it wasn't the selling point. I just wanted to see JP in the theater again.
I was 13 when I saw the movie in 1993 20 years ago with my mom. It was a thrill to see it 20 years later at 33 with my wife. The movie is still as entertaining for me then as it was now. I was a little annoyed at the super young kids people brought to the theater who wouldn't shut up, but the slightly older kids (10 and up), were behaved and seemed to love the movie as well.
The T-Rex Paddock attack is still fucking amazing, both visual effects wise, and tension/pacing wise. So, so good.