Sending you some pixie dust but looking at the current promotions, that time is blocked off for a reason. The current free dining, as you said, is not eligible, and the 30% off discount ends before that date.
They haven't released any discounts for that time yet, but I would expect them later this month (maybe) or next month. Currently there is a Florida resident rate thru August 14th and an everybody rate thru September 29th. I'm not really expecting anything until after August 14th.