I echo earlier reviews about taking a tour. I would recommend that you reserve in advance. The tour involves a lot of walking and several flight of stairs, so if you have mobility problems, you won´t be able to do it.
The tour takes you all through various workshops of the artists and supporting groups (scenery, wardrobe etc.), so it´s very interesting. One caution, the people are off work at either 2 or 3, so if you take the 3pm tour like I did, you will not be able to see the folks at work. There is a 1:00 tour and maybe another even earlier.
However, it stil is an interesting HUGE tour.
Enjoy!
