Kajunswty,
To get the Teacher/Govt. rate, I've just called the Swan/Dolphin direct at 800-337-1500.
Also, another co-worker called this past September requesting the govt. rate for two rooms for a trip in May of next year. Initially, he was told that only one room was available for only 5 out of the 7 days of his trip. I told him to call back the next day, which he did. He was then able to get the two rooms for his entire stay. The person booking said something like that she had to 'doctor things up' a bit, but was then able to get the rooms for him.
I suppose it's one of those things of finding the right person that's willing to go the extra mile for you.
Go figure...