Forgot to say....

Registering doesn't cost anything and you aren't under any obligation to attend after you register but the only way you can attend is to register prior to the event (i believe)

all that happens is you get an email with a code on it that you have to take with you to the event

For everyone that doesn't know what 3December is, it's a show/conference soley dedicated to Maya and Studio Tools. Also there are events there which were at Siggraph, so if you couldn't get to the US last July for that, here is your chance to see what went on