As you know from watching here, MMS 2012 has been sold since February 27th, 2012. A waitlist had been created to still and try to fit people in. That waitlist is now closed!
If you have been given a registration code with which to register, you are encouraged to register as soon as possible using the following link: Register with RSVP code.
With the waitlist closed, registering with a RSVP code will not be open much longer, either.