I happened to check yesterday and the "Canadian Rates" dropped again. Balcony rooms starting at $569 IIRC. Once I figured it out and submitted the form, all our double balcony rooms got another $190 discount, and our rooms with 3 or more people on the "More = Merrier Rate" got $250 back!
Our group has saved over $600 per room now since booking in the fall of 2012!
....and only another 10 days to go