Having seen the show, we decided to visit hoping for a view of a small piece of what goes on there. When we arrived, we we're greeted immediately by a young man (who also worked the souvenir register) who told is of a free tour about to start.
The tour was extremely informative, and we were able to see most of the work stations.
We visited on a Saturday, so none of the cast was present. We were told if we go during the week that they would be there actually working on restorations.
Overall, a great place to visit!