Volunteers attend a short group introductory class and tour. Cost is $20. You will receive a shirt and be able to come in whenever you want and spend time doing whatever you choose to do.
You would have to call them.
I think they do. Best would be to visit and ask. Last time we were there, they had a number of young folks looking like a training tour.
For kids they have programs and for adults I am not sure
Thanks! Your answer is awaiting moderation.