If you have a post card rate then I'm sure it's accurate.
What options did you purchase on you tickets? If they are premium, then you are saving about $600 from the standard cost...Basically getting your meal package for free. Nice!
Looks like a great rate. We have 7 nights for four at POR with MYW expirable hoppers and MYW dining for $ 2915.00 (using AAA), which was the best we could do. (2 adults, 2 teens)