Writing To The Studio 54 Stage Door

Hello, longtime reader, first time poster. I don't know if this question has been asked millions of times before, but I searched and could not find an already existing thread (if there is a thread could someone point me in the right direction). Anyway, I want send a letter to the Studio 54 stage door about how I am a longtime fan of the show and ask if they can send me a couple of playbills (unsigned) for myself and a friend who is also a huge fan. If I want to write to the stage door, how would I go about doing so? would I just write to the address of the theatre, or would I have to indicate that I want it sent to the stage door? I know I need to send an S.A.S.E. and all that jazz, but if I address my letter to the theatre's address, who would receive the letter? Any input on this matter would be greatly appreciated thanks.

Sorry for the length of this post, I just really need clarification on this matter. Thank You :)

How much do you send on the SASE and what kind of envelop do you enclose?

Make sure it's an envelope big enough to fit a playbill.