I called and asked about availability for June today and was told the cabanas were $319.50 including tax, which has been mentioned before, but were for up to 8 people. I had only ever heard 6 and I know others have mentioned they hoped they could get 7 in. I'm not sure if the CM was correct but thought that may help some of you.
I'm still on the fence. There are only 3 of us but a shady spot would be nice (and it IS for our 10th anniversary trip!) That's still a lot of money, though. I was thinking about the premium chair space but just can't find much info on them (as far as location, how shady they are). $50 is a LOT easier to swallow but if it isn't that much better, I'll just go with regular seating.