Sorry but.... I'm-a-gonna pour a little water on the party here.
It is a run of the mill email, its triggered by your GMAT.
I got one last year, as did LOTS of people. They try to make it sound like they are actually selecting you - they aren't. The phrase: "You have been selected from a group of prospective students to attend this event." seems deceivingly personal and like some thought was actually put into who got invited.
This couldn't be further from the truth: its an entirely automated process based on GMAT score. Last year, it sent that email to non-us citizens as well - who are not even eligible for the program! I nearly went to the breakfast they had planned in Chicago, but fortunately discovered the truth beforehand. I called the school and pressed them a little about how I was selected - they finally admitted it was just a database grab based on GMAT score.
Whats worse, they sent the invite out on TWO separate occasions and eventually had to send follow up emails apologizing to all the non us-citizens they accidentally "selected" for a program they can't even apply for.
You should be happy you got it certainly, but sadly, it means little - its not just a NY thing either, they hold these little get togethers all over the US.