Possible Clues:

• Place to wait before going on
• For putting indoors for the rest of the cast (5, 4)
• Where some people wait to be shot
• Jealous, Othello went up to the performers' relaxation area
• Place in theatre must be tidy - never churned over inside
• Here's the rest of the cast envious over Othello
• For relaxation, cast off here
• Place in a theatre with new capacity
• Colourful retreat for actors in theatre
• Where rest of ham never returned during wedding party?