I just checked. New unload does indeed take up around 3/4 of the original finale theatre area. Guests will exit by roughly walking through where the old right hand vehicle doors used to be, to a new corridor that leads to the old exit doors.
The left hand theatre vehicle doors are more or less where the “barn” entrance is for GWD and return to load cars. The GWD load/unload area is half of the old GMR return to load room that later had the TCM projections above.
It should be noted the old maintainence garage exit and associated vehicle pathway has gone. The new GWD dock and new exit corridor now use this space.