This transition movie is bridging what has come before with what we know is coming, specifically the Infinity Wars movie. This movie leaves the Avengers team very much tattered, with Thor and Hulk conspicuously absent. It leaves a question about where those characters will fall when they are brought back into the storyline. As most know, this movie also introduces Black Panther, which I think is very well played by Chadwick Boseman, and yet another incarnation of Spider-Man, this time played by Tom Holland. In the main battle between the two teams, Spider-Man and Ant-Man (Paul Rudd) very much steal the scenes, both in terms of comedy and with what they bring to the fight.
For those who get the discs, the movie looks and sounds great on Blu-ray. For extras, there is a commentary track on the film by the filmmakers (none of the cast), about an hour plus of making-of and behind-the-scenes material, and a gag reel. There is also a short feature introducing the Doctor Strange movie. Ultimately, this movie is not so complex that you would have no idea what is going on if you have not seen the other movies, but given the movies and, to a smaller extent, the various TV series are all telling a large overarching story, the events of this movie will be easier to follow the more you have seen what has come before. The acting is very good, and the special effects are top-notch. If you have superhero fatigue with all the various movies or are just lukewarm to them in general, then this will probably not be for you. For everybody else, while liking it or not will be subjective, most will find it enjoyable.