Re: Closed to the public?
I have friends that are open top the public only on Thursdays. There is a sign on their front door stating so and they set that time aside so they are prepared to accommodate them. You might want to consider doing something similar. And do that on a day that you set aside to not extract.
That or have an observation window. I worked on a Dairy Farm that had an observation window so people who wanted to see how it was done could see it and not be in the same room as the work being done.
Just because something is new to you, doesn't mean it is new, or revolutionary. Mark Berninghausen