Doc if they let you sit in the cockpit, sink it in because usually they do not let the public up into this area as the a/c are still flyable and they don't need any little hands touching anything. many times the tail turret on the B-17 is crammed with cargo so again do not be dissappointed if you don't get to lay down and get the "real" feel of that position.
Geez just thinking about this and pulling out my pics I am going down memory lane. man my kids were little then

and yes bring the video corder if at all possible with you and take a 360 views of each a/c. iamgine touching running equipment from 60 years ago ! yeah

~E