just do it.
I saw it in 2D and I probably recommend that, because it's breathtaking enough without the spectacle. I went with a friend who has seen it six times and is still madly in love with it, so you know it's got to be good (or he's crazy, one of the two, but I'll go with the former).
And I want a pet dragon. Sooo cute for a large scaly beast. All the characters have amazing facial expressions.
I'm listening to the soundtrack right now and it's wonderful.