To qualify for an airline discount rate you must be employed by an airline. If you are, call Disney res. and ask them if they have one for the time you are traveling and how much it is.
Best deal I've gotten in the past was the stay for 7 pay for 5 deal (2 nights free!) Stayed concierge-so it amounted to quite a large discount. This past March it was AP rate-$100 per night off. For Dec 2005 currently booked at AAA rate - 18% off rack.