Rwy 24L vs Rwy 24R

You could always ask them what their policy is - or if there is any
policy at all. It may be whatever the controller on duty thinks
appropriate. I used to fly out of an airport with parallel runways, and
noticed that they seemed to prefer the left one (which was slightly
wider) when traffic was light. If it was busy, both would be in use,
with left traffic on the left and right traffic on the right.

Some years ago I flew into a very busy parallel runway airport in the
SF Bay area. The controller told me
to "follow the plane ahead" - which I did until on final. Since he
hadn't cleared me to land, I asked. Guess
what? He had forgotten me - and at tle last possible moment switched me
from the right to the left. If there was conflicting traffic I never
saw it - and still don't know why the switch.

David Johnson