I was just there this weekend too, on a 3 night award stay. Checked in Friday afternoon, was told no suites or junior suites available then ENTIRE weekend due to an event(ball). Since this was the frond desk manager that checked me in...I reluctantly accepted and did not put up a fight. She did put me on the club level and gave me breakfast coupons for each day.
Overall the hotel was ok, however, I often have a hard time believing that every single suite or specialty room is sold out. But I suppose it is possible....
Gene