Saw it in 3-D tonight at a 9:20 showing. There were a surprisingly number of kids at a late movie, and I wonder how many of them were scared by it... I know I was massively creeped out. But I also loved it. I loved that it was creepy in the story, not gore. The friend I went with and I turned to each other several times because we were freaked out. When the cat tore out the Other Mother's eyes, we both jumped. And the Other Father getting sucked into the garden... wow. Oh, and the first appearance of the ghosts... yeah, there were plenty of moments that were creepy.
I also really enjoyed the subtle use of the 3-D. It added to the texture of the world more than anything else, which was really nice and not overpowering. The visuals were stunning, too. The night sky and the garden in the alternate world... it took my breath away.
Overall, absolutely loved it but definitely would not take a kid to it. 9.5/10