One thing to bear in mind in the Aerodrome/Area argument is the mobile contract you sign when you join the company....
You sign up for area then you know there are two sites your career is likely to end up at; and also whichever posting you get, there will be people from the college that get posted there with you.
Aerodrome is a different ballgame. Its NSL business need, and there are a lot of aerodromes you could end up at. Where you are from; or even where you want to be have little influence at the end of the day. And there's a big chance you will be posted on your own.
When applying it is normal to take the mindset that you don't care where you go. But posting day, especially for aerodrome candidates, can be an interesting time. Mobile contract means mobile....