I just came back from seeing it with my friend and oh my... I love you Hayao Miyazaki. I've watched your films all before and this is such a fantastic piece of work you have done to finish your career. It was the perfect bow to wrap the present.
If you are a fan of ANY animation, or even if you aren't, I highly encourage you to go watch this.
I was disappointed when I walked in the theatre to find only a couple sitting in the middle. They were tearing by the end.