That is the time we travel every year, last year the SAB was open until nine, I think. The year before it was 10, because I remember swimming with the kids and being able to see the the firworks from Illuminations over in EPCOT.
As far as Hurricane Hana's, that is our one mild complaint af SAB, the hours are really dependent on capacity...they aren't set in other words, it varies daily.
Hope you have fun!!!