It's been awhile since I have been to EAA Airventure, but as it is put on by the Experimental Aircraft Association, you will find it is definitely skewed alot towards Homebuilt's and Warbirds.
Most of the military aircraft are one static display only, however they do usually have say a C-17 doing shortfield landings and the like, I would also expect to see a flyover or two.
I recall in 97 they had the SR
-71 and F-117 perform.
Also in the past, only aviation related people could access the flight line, but the last time I was there (97) anyone could get in. They were having problems with people around the aircraft. The constant PA anouncements, "please don't touch the fabric aircraft, please don't let your children climb on the aircraft, and please don't smoke under the aircraft", made it obvious they required a separate area for non aviation related people to watch the Airshow. Maybe someone else would know what the practice is now.
BTW in 97 the flight line was 2mi long and the air displays were somewhat stretched out for everyone to see.
Make no mistake, EAA Airventure is based around homebuilts and aircraft builders, however there is sure to be something for everyone, and a weeks worth of product halls, seminars, workshops, tens of thousands of aircraft and air displays. Dont forget the flying boats on lake ?
Enjoy the show