Ant-Man and the Wasp was a really fun and enjoyable movie. I was entertained from start to finish. I loved just about every single character. The movie had very creative ways of using the shrinking technology in the action, the plot and in other moments. The movie as a whole had a really good blend of action, comedy and heart, which is what Marvel is really good at.
However, I do think some of the plot resolutions are handled as well as they could have been. For one, it is never really explained how Janet van Dyne has managed to stay alive in the Quantum Realm for 30 years. But that did not distract from the movie too much.