Just went in to watch the movie and have to say i really enjoyed it, especially the scenes with the spitfires. Another thing i liked is that it kinda "breaks" from the standard movie model that we have. Yes we follow the story from 3 different point of views, but at the same time i wouldnt really call any of them "main characters". We know close to nothing about the characters we are following, there is not a lot of dialog, just the suspense of an impending attack.
I can understand why people wouldn't like the movie, but well each to their own.