Non-accessory = public parking. I doubt it will have ground-floor retail, neither O'Keefe or Perdido is a main street. Most of the ground-floor retail space in the CBD is underutilized anyway, we don't need more of it in sub-par locations.
I just hope it has a decent design. Looks like they hired Woodward, which has done some decent stuff. Hopefully they borrow some tricks from the little
Hibernia Tower garage, which has a lot of cool materials.