There are very few QS locations that give a DVC discount and none of them take mobile ordering (except for the ones at CSR maybe).
Cooke's of Dublin, Earl of Sandwich, La Cantina de San Angel (the only one in a park), Wolfgang Puck Express and then some QS at CSR offer a 10% DVC discount. None of them (except maybe at CSR, I haven't checked) offer mobile ordering.
The discounts come and go. At one time Gasparillas at the Grand Floridian had the discounts, but now they do not. It is always worth asking. I am not aware of any of the mobile ordering locations that offer DVC or AP discount.