The owners insist you must arrive by 10 am. I took this to mean that if you were even a minute late, you would not be allowed on the tour. This is not the case. If you are late, you will miss the beginning and obviously you will miss out on hearing the entire talk given by the owner.
Apparently, another patron felt the same way as she asked if it would be okay to take her son to the restroom as the tour was about to begin. If the owner had understood her question, he would have told her that she and her son could catch up with the rest of the group. After not answering her question (I think she repeated herself twice), he chose to ignore her and continued speaking to the rest of the group. I thought his behavior was rude.
The talk was informative/educational. But I wasn't as impressed as I thought I would be. It was a nice place to visit if you have never been there. But I wouldn't go out of my way to visit, again.