Yes you can take your 3 year old.
Yes you can during tour times, all ages welcome. Only their paranormal investigations or stay the nights are only 18+
I don't know what they would get from it, but it would be interesting to you and I don't see any reason to leave them behind.
You can take your three year be careful there is rattle snakes out in the yard
Yes they might not understand all the history but still cool
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