I think 3D is gimmicky too but this is the first movie, that I've seen clips from, that actually makes me want to see it in 3D. Of course, there's also the "how did they make a movie out of that book?" factor.
No, you need a 3d tv, 3 d blu ray player, and the 3 d glasses (3d tv comes with them) to watch a 3d movie. Just the 3d blu ray player alone will only allow you to watch the standard 2d film. Hope this helps.
You can't play the movie in 3d if you don't have a 3d tv. However, everything else can be seen, even if you do NOT have a 3d Blu-ray player. a standard Blu-ray player will do. Of course, the PS3 doubles as a 3D player.