The movie was awesome! I watched the 2D version, but it was still better than most of the animated movies that I have seen. The plot was a little different from what I have read when I was young, but it was a delightful surprise instead of a turn-off. The OST was nice too. Go listen to it if you haven't.
The most memorable scene was the floating lanterns in the sky, with Eugene and Rapunzel sitting in the boat. That was the most classic moment ever, with all the ideals of pure love.
The storyline was classic, but not boring. I can imagine little kids sitting in the cinema, looking at the big screen in awe. There were many funny moments, and should be funny even to little kids because of the visual impact. Totally recommend it for family outings =)