As far as hotel occupancy, when I checked July 4th weekend, WDW was shockingly wide open. And I was helping a friend today look for on-site rates for next weekend they had plenty of availability at rates similar to what I had booked first weekend of June. Never expected Summer to become slow season at WDW but it's hot enough that maybe it should be.
As for the Olympics, isn't that not for another month? So some are saying attendance has been soft...because of an event that's happening 30 days from now?