In the Hollywood rendition, there is an indoor holding area before the preshow, the preshow itself, and the 360 portion of the attraction with the attraction going out of a themed storage facility.
We know there is Ludacris joining into the attraction (was seen from his tweets a long time back after the Orlando attraction was announced) as I wouldn't be surprised if we see any other changes come into the frame to add more substance to this version compared to the Universal Hollywood tour sequence.