I would suggest to keep watching here and Mousesavers.com to see when discounts for the general public are offered during the timeframe of your trip.
To avoid giving out CC info, you are going to just have to bite the bullet and make that long distance call to the US and book with Disney Central Reservations office yourself. 407-WDISNEY
Then when you make the call get your confirmation # and the amount of your deposit and mail them a check in US funds right away so that it arrives before your cancellation date.
What AZZ means is right now there is an offer for the general public for discounts on Disney resorts for the time period of Aug 29-Sept 29. If someone calls Disney and says that would like to book "xyz" resort for Sept x - x and I want to use the discount code "AZZ". Then the agent will tell them if there are any available rooms at that rate for that resort for those dates. If at that point, the agent says there are no rooms at that rate, then ask the agent what are the rates for rooms with AZZ at other resorts for those dates, then pick the resort that matches your budget and tastes.
Disney MAY offer different types of discounts at different times of the year for various types of guests (Passholders, Florida residents, Canadians,
AAA members, Disney Visa Card holders, or the general public). It is always a guessing game and a waiting game to see if those discounts are offered for the time of your trip. Mousesavers.com and this board will ALWAYS have the latest information on ANY discount rates that might be available for you.
I hope this helps explain all this.
Carol