Saw it in 3D last night and I think it is great. I never usually watch 3D as it adds to the cost despite having Odeon Limitless so it was good to see that they used that well, not overly done and in the right places.
The world they created is incredibly detailed, so much to look at, the SFX now is so good it is quite hard to tell what is real and what is fake at times. After a while, I forgot who is CGI and who is real.
The pacing was decent, didn't look at my way through it, the acting, actually the best one was the one who is CGI which is weird. The others I thought didn't have that much too do, I think this is the biggest negative of the film.
I want to see the sequel now, I hope this is a hit because they left things rather open!