this is the first movie i took my 4yr old daughter to. she loves movies and watches movies all the time at home. I do realize that this movie was PG and that I was taking a chance so I am not at all being negative about the movie itself. As a parent, i was really enjoying this movie, but my daughter jumped more than once during the first half of the movie (non-3D version) which had alot of night scenes, fire, attacking dragons with very loud sound. I am NOT at all discouraging you from seeing this movie and I will probably buy it for my daughter next year when it comes out, but I just wanted to give other parents a heads up that it might be a little to 'realistic' for your 3 or 4 year old if they aren't used to this big cinema experience.