Some shows care, some don't. Simple as that. GENERALLY shows that do not have a pre show curtain ask that you not take them. Here's an incomplete list of shows that I've found that they do or don't care if you take pictures of the stage/curtain before the show. These may have changed, but this is what I found when I saw them.
DO care
Lion King
Book of Mormon
Hedwig and the Angry Inch
Hand to God
An Act of God
Curious Incident of the Dog in the Night-time
Matilda
Les Mis (When I saw it they said not to)
A Gentleman's Guide to Love and Murder
Do NOT care
Something Rotten!
Aladdin
On the Town
It Shoulda Been You
Wicked
Kinky Boots
Finding Neverland
Chicago
Hope this helps!
Updated On: 5/25/15 at 12:52 AM