Good sequel, kept within the original theme, and added lots of funny characters. My girls loved it, and I actually stayed awake through the entire movie. I did not see how the IMAX experience made a difference. Maybe, we need to watch the non-IMAX version to tell the difference.
Overall this was a good movie; I'd give it a B+. It had a few scenes that were definitely for mature audiences (or as a parent, you'd have some explaining to do). I never take my girls to see a movie until after it has been out for at least a week, That way, I can read the reviews and know what to expect. The rating system hit this one right on the head. The scene where he dumped her because of no chow-chow, is real life. A teen's hormones are all over the place, and most guys will move around until they find someone that will give them what they want. It's the real world, and has been that way since I was a teen - 30 years ago..
Usually, when I take my 9 & 11 yr old girls to a movie, I have trouble staying awake. I did not have a problem with this movie, and even caught myself a little teary-eyed a couple of times. Although the adventure was slow to start, and the idea that a wig will make people ignorant as to who you are, doesn't really make sense, it was a nice movie for the family. Not too much of that mushy stuff that makes parents "cringe".