I sent a letter and SAE with US stamp on to the Stage Manager on: 29th July 2014, and on Thursday I recieved this programme back from the cast, signed inside, plus the Stage Manager added more postage stuck my SAE to a bigger envelope too, really pleased with this success.
address I used was:
Stage Manager of ' Cirque Du Soleil: Varekai',
Barclays Centre,
Atlantic Avenue,
Brooklyn
NY 11217
USA