We stopped in here on a whim on Sunday afternoon. All bus tours, movies and the cylorama were sold out for the day, but the Museum was open and it was excellent. We spent about 2 hours there. The exhibits and artifacts are interspersed with short movies from the History Channel that take you through the three days of battle and beyond.
The museum itself is probably not suited for very young children - they would be bored - but the packs of Boy Scouts that were there appeared to be getting something out of it.
The on-site restaurant sold hamburgers and chicken sandwiches and chil and such. The food was fine - in fact the chili and cornbread was quite good.
There is a free bus from the parking lots but there is also a nice walkway.
We will return in October to complete our visit!
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