We went to the 3D showing for several of reasons. 1) We had heard that the 2D showings were packed. 2) The 3D showing was earlier. 3) Someone recently commented that going to the theater doesn't make much sense as you can just see the same thing at home now, with floors that aren't as sticky; however, I don't have a 3D TV at home.
Now the movie was fine in 3D. This wasn't like the 3D Hobbit movie which actually made the experience worse. And while it didn't take full advantage of the 3D experience (and there were some scenes which really missed opportunities), there were still some nice shots with it (nothing on the level of Guardians of the Galaxy, though).
No, the largest problem is that 3D gave Rowen and Janelle headaches, a fact that they both made certain to share with me multiple times. I feel that part of the problem is that they both sat in the seats that were farthest from the middle as that usually distorts the picture in ways that bother me. Another part of it is that the glasses aren't that comfortable. Whatever the reason, they did not find the experience enjoyable (I'm not sure what they thought about the actual movie).
Considering the added expense, the lack of any particular use of the medium, and the headaches it caused, I really can't recommend watching the film in 3D.