I know that it's a slow time, but just annoying that two favourites, BTMRR and DINOSAUR (and Swiss Family Treehouse) are both closed during our trip (however, we will have Soarin' , DAK night-time activities and hopefully Frozen and Rivers of Lights, so shouldn't complain too much...).
End of July through August is not a slow time.
As for the DAK night time/extended hours, its great. But with the attraction down, i'm scratching for things to do while I'm there later. I know its only 1 attraction, but its a big one.