There's a lot of laughs, creative action sequences, some nods to the comic, as well as a few recognizable names from the Marvel universe popping up. Even the kid sidekick Iron Man acquires in the second act is a fairly entertaining part of the cast. And if you disagree, don't worry, he by no means dominates the run time, and won't ruin your enjoyment if he isn't to your taste.
Being a fan of the source material's Madarin, I feel a bit cheated by the resolution of his plot line, but I do have to admit that it's a clever twist, so I can't really count that as a true point against the film's favour.
Points that I do reserve the right to be annoyed by though are:
1) Happy Hogan frowns all the time. He should not smile. He's like the Droopy dog of comics lore that way.
2) If you're going to tease us by putting A.I.M in a Marvel flick, you are morally obligated to have M.O.D.O.K show up at some point. And I mean the real M.O.D.O.K. Giant floating head and all. I don't care how silly it will look on the big screen. If A.I.M's in the movie, so is everyone's favorite Mobile Organism Designed Only for Killing. End of story.
But other than that this is well worth the price of admission. And for all points I've brought up there, if you're a casual fan and you haven't read the literature, you won't even notice those gripes when they present themselves. To me, in some ways it feels like a good 80s action blockbuster, and one that keeps characterization strong despite being superpowered with adrenaline.
4 Rings of Power out of 5