I have no idea if/ehen he comes out.
However, your best bet is to either:
Give it to the stage door guy before the show
Or
Mail it to Platt in care of the theater
Another actor might just shove it in their bag and forget about it. (Not on purpose).
If we're not having fun, then why are we doing it?
These are DISCUSSION boards, not mutual admiration boards. Discussion only occurs when we are willing to hear what others are thinking, regardless of whether it is alignment to our own thoughts.