John, I've been to the battlefield many times, I live less than three hours away. I want to share a story with you since you menioned the artillery display.
A nephew of mine and I decided to go one Saturday morning and my wife decided to tag along. She was about 8 1/2 months pregnent. When we parked in front of the museum and got out of the car they fired the first "shot" of the day. To end the story I'll simply say my boy was nearly a real "son of a gun" as my wife nearly went into labor right there. It's funny now but at the time it weren't... so she tells me :-)