No and no
No I can go and tour it. We just went from place to place. I love gettysburg so much
It's best to have a reservation for the special candlelight tour for the Holidays and the July 4th tour that has reenactors. Otherwise, not so much.
You will like it better if the number is smaller. We had maybe 10 in our group and that was almost too many.
We just walked in (2 of us) and took the tour with just the two of us. No minimum number is required.
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