OK, so here's the story. I talked to my local sales person, and she gave me an address to write to at Tesla. I wrote, and they told me that it was an exclusive event, and that in order to keep it small invitations would only be going out to Signature reservation holders and VIPs of various sorts (board members, Elon's personal friends, press, etc.)
Then, today I got mail from them telling me that they are going to extend the invitation to all Roadster owners after all, and that the mail should be going out later today. I guess they didn't get as high of a take rate on the orginal request as they expected (or feared
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So, many of you should check your inbox soon.