What a fun movie! If you are going to see it, you really must see it in 3-D. Much of the fun comes from seeing tape measures, rocks, and fish flying at your face, as well as a few 'roller coaster' effects. 2-D would just be boring.
One nice thing is that our theater gave us good pairs of 'Real-D' glasses to wear, not the flimsy paper ones that you may have been given at other 3-D movies. I wear prescription eye-wear, but that was no problem as the 'Real-D' glasses fit nicely on top of my regular glasses.
What's even better is that it was a clean movie, language and otherwise. I hope you enjoy it as much as I did.