That's interesting as my statistics came from the Chamber of Commerce. I suspect that at the time the stats were taken that rooms could've been "full" but since then hotels have released entire blocks of rooms that could've been on hold. Which isn't outside of the norm as a practice.
I do know that many downtown businesses (bars, restaurants, honky tonks etc...) looked into purchasing blocks of rooms in downtown hotels so that employees would not have to commute into work due to road closures and numbers of people flooding into the downtown area.
So yeah, rooms may be available now...but at the time...not so much.