Just a thought....
We had ressies (no discounts) already for May21-28. When I called I was told the same thing - only King beds. I called back 3 times trying different ways to call. First time I called I asked for the DV 4/7 deal and they said only King beds. Next time I called I didn't even mention I had a booked ressie already....same answer. Next time I asked about the deal, the same thing...King bed, I said "What if I already have a room, couldn't I use the code on that room?....He checked with a 'Super' and I got it!
So....don't quit!!!! Its been 2 weeks and all the rooms may be just 'King', but if you already had ressies, I might would keep trying!
Hope this helps with some pixie dust for someone!