Heidi V said: "My daughter also received the same message and replied right away to confirm that she will use the tickets..Now what? We are arranging to go to NYC now, but hoping its not a scam--will she receive additional information? Have you received any other info?"
I also submitted the form after I got the congratulations email, and haven't heard anything back yet. If I had to guess, they're going to send an email to everyone after they've finished the last round of sending out emails, which I think is the 17th. I wish they would send a confirmation soon since I need to book a hotel, but I'm just going on the assumption that filling out the form was enough.