I don't think it is SOP to do any in flight or airport recognition at 1MM. The recognition that 2-4 received was probably as a direct result of some input from a friend of hers. I did not get any recognition, in flight or at the airport, at 1 or 2MM. Now, at 3MM, that was a completely different story. Some of that, I believe, was also as a direct result of input from the recently minted MMer on this forum.
instead, I believe that the standard recognition comes in the form of a letter from Ben Smith, and the package that is received.