Roberts147
Hey there,
In reality you don't get to pick the fleet you join when you graduate, you go to whatever fleet needs new S/Os at the time. They will try to give you what you want though, but there seems to be no guarantee. If they do happen to ask you which fleet you'd like to join after finishing training in ADL, I'd say their main motive is to get you to single out a Cathay aircraft type for them to base their technical questions on, rather than the pros and cons of each fleet. That was my own personal experience.