My oldest boy saw it in non-3D format and thought it was great - but he has issues with a 3D format; his eyes constantly water during the show and he gets headaches.
I took my youngest boy to see it Thursday night in 3D and it was amazing. Just to get an idea of what the standard format might have been, I closed one eye and the graphics and effects were still pretty good, but not as good as 3D.
If you can, sit deal center in the theater with your head level and eyes square to the screen. Sitting off center might create some image mismatch.
I'd vote for the 3D version, personally.
Scott
