I really, really liked it. I saw it over the summer with my daughter, and we had a great time.
Something I noticed about the movie - I don't know if it was the way they told the story, or if it was just the spot I was in, but the (mother-hugging?) cliffhanger didn't bother me. I'm not spinning up wondering what'll happen next. I've got an idea of where the next part of the story will start, I don't know for sure where it'll go after that, and I'm cool with it. With the Avengers movies I was always getting into a guessing game of how things fit into the overall story, but with this, I'm just along for the ride, and I'm having fun with it.