One of the joys my wife and I have experienced as empty nesters is the opportunity to visit both sites. Very impressive, sobering and highly recommended.
But not as joyful as grandchildren.
Haven’t been to Saratoga but I’ve been to Yorktown a couple of times. The trenches and bulwarks are still there from the battles fought during the Revolution and the Civil War. It’s an impressive “history comes alive” kinda place.