Last year I got off the skyliner at CBBR due to bad weather and caught an Uber right there by the main entrance/near the Jamaica bldgs. So I know it doesn't have to be at the main bldg at least. I have seen reports at other spread out resorts that the rideshares can go directly to your building area.
There is no reason that a ride share couldn't go directly to your building at CBR. Once through the main entrance guard shack there is no restriction as to where anybody can drive.
Yes, they do! We got a Lyft a right at the little roundabout behind the buildings in the Aruba section where we were staying. Got dropped off there as well. Very convenient!