I don't really have much to say about "Ant-Man and the Wasp". It's one of the safest and least controversial action movies I've ever seen. If you know how an action super hero movie goes, this movie checks off all the requirements. We got some fun looking action set pieces. We got charismatic heroes fighting against generic and sometimes unnecessary villains. We got a generic musical score that you probably won't remember upon exiting the theater. Etc etc. Although this movie is light and fun and the comedy is well timed, I think it's ultimately a forgettable story about some of Marvel's least interesting characters. By the way, they've managed to retcon Paul Rudd's character from a likable, goofy, yet highly intelligent dude into a goofy, sometimes annoying duffus. As fun as the performances are (though I'm not sure if Evangeline Lilly is actually a boring actor or if it's just her character that's boring. It's probably both.) and as fun as the action can be (though I'm bothered by how inconsistent the physics of the movie is), it's not enough for me to find the movie interesting.
The movie really takes a dump in its final beats. Everything is quickly and haphazardly resolved and it feels hollow, super convenient and incomplete. One of the motivations of one character is resolved so easily and suddenly that it's a legitimate cop out. The script absolutely could have benefited from some more rewrites. Also, don't even bother with the second post-credits scene. If you've seen the trailer, you've seen the scene. It's totally not worth it. It's just an ant playing drums for around 6 seconds. Spoilers. Sorry but not sorry.