Hi,
From my information there are a lot of applications, over the EID period 600 alone, the selections are not til next year, so if you applied and did not hear for a week or two, I really would not worry. Remeber whilst this may seem like the most important thing in the world to you, Etihad have one or two other things to do!! The scheme has not even been advertised yet. They have another staff only selection this year, I would think they are sorting that out first.
If you email twice its just more emails to go through and will slow down all replies.
From my info, if you apply you will be asked to attend a selection, if when you come to the selection you present a passport that shows you over the age limit, or any documentation that shows a commercial licence you will not be allowed to take part in the selection. Nice and easy, no filter other than ability.
As I say its just what I hear!!