The first two acts are OK...just...OK.
The last act is full of great spectacle and fan service moments, and is the only part of the film I feel the desire to rewatch.
There are some good sendoffs, and ok sendoffs, and certain key characters who don't get a meaningful sendoff at all.
To be honest, I'm kinda baffled by both the percentage and Avg rating this has on RT, but different strokes.
All in all...its the superhero film version of Return of the Jedi. Not an offensive way to say bye to some of these characters, but there are parts of the movie that aren't all that engaging. Upon first viewing, this is not a movie I'd rewatch in its entirety.
7/10, mainly for the last act.