Has anybody ever had any success from Panic! at the Disco?

I'm going to send a request letter to Panic! at the Disco at this address: Panic! at the Disco c/o Decaydance PO Box 1803 Tampa, FL 33601 Has anybody gotten success? Do you know if they do authentic autographs? And would they read the letter or not? Sorry for all the questions, but I'm new so yeah. ...