We happened to do a daytrip up in Gettysburg two weeks ago during their 155th reenactment weekend. Swarms of people in period dress up there and in the town. In the three hours we were out on the battlefield, all we managed was the new (2008) visitor's center to the Meade headquarters to the High Water mark, then along Cemetery Ridge via The Angle and the Copse of Trees to the Pennsylvania Monument, and then back to the parking lot. Afterward, we had dinner at the Appalachian Brewing Co. and ended up doing a ghost tour in the evening before returning home.
Found out after the fact that my second cousin and his father were up there with an artillery battery, and would have given us behind-the-scenes had we wanted. We live in Manassas, whose battlefield park is quite large. But Gettysburg and the stops there dwarf Manassas. In three hour blocks, it might take a month to traverse the whole thing. They had people dressed up as President Lincoln and General Grant engaged in historical discussion at the Pennsylvania monument - these people knew their roles well. Though why Grant was at Gettysburg I am not sure I understood, given that he was at Vicksburg, but nonetheless it was a compelling performance.
(I'd post some photos but I haven't uploaded any yet - way behind in uploading to flickr or the like)
Thx for sharing. I really want to get out there for a reenactment weekend. We are only about an hour and 15 minutes away, and I absolutely love that town.