Benjamin,
I am taking my daughter to Gettysburg this weekend as well. I'll be making a quick stop in Thurmont, MD first and then motor on up to Gettysburg. I try not to miss it at this time of the year.
Oh, and no. I don't think the result of the battle will be any different. But if you want we can use Nerf muskets and try to settle it once and for all.
