First, let me state for the record: GotG will probably be one of the biggest crowd pleasers (if not THE biggest) that Marvel/Disney has put out to date. The audience I watched it with enjoyed this movie quite a bit judging from their reactions. The film zooms along at a fast pace, but seems to avoid feeling overly frenetic by injecting character development and humor throughout the film. There are times when it feels like it might careen into the sort of chaos that plagues the Pirates of the Caribbean sequels (which often feel like skits and scavenger hunts more than stories) but it never goes that far.
What some people might find off putting is the amount of funny business in the movie. Without a doubt, this is the most humor laden film Marvel has produced. It sort of reminds me of the old Richard Pryor/Gene Wilder movies from the 70's in its structure and tone.
The other thing I wonder about is where do we go from here? Marvel was already sort of trapped in a box with their movies in that now audiences expect a certain type of movie every time the go see a Marvel movie. Is GotG going to raise the wacky fun bar so high that we will never see a more serious take in future Marvel films? I would sort of like to see Marvel venture out into other genres with some of their upcoming movies (like a Dr. Strange horror movie or a Daredevil Crime/Heist movie) but how would such films be received if the general public starts to expect lots of yuks in every Marvel movie. Remember, one of the criticisms of the Man of Steel movie by many reviewers was it wasn't fun enough.
I don't know. My concern may be all for naught. Captain America 2: Winter Soldier wasn't overburdened by comedy, so Marvel may be embracing the idea that their films can have different tones. I guess we will see when the new batch of films starts to emerge.
Final Word on the movie: If you enjoyed the trailers, you will love Guardians of the Galaxy.