I can't wait to see it. One thing though, my 11 year old wants to see it badly also. He's mature for 11 (his mom's a freeper!), but would this be too intense?
I haven't seen it yet so I will have to leave it to Joanie to answer your question.
Since you say he is a mature eleven-year-old, I urge you to take him. He will leave the theater with a genuine appreciation of the sacrifices that were made in his behalf, and a powerful comprehension of the cruelty that courageous, duty-bound Americans suffered at the hands of a barbaric enemy (which might serve him well, should he come across politically correct curricula in the classroom, now or in the future).
Saw half of it today beforce it was stopped by a storm going through. Got a rain pass --literally--and am going back tomorrow.