Yes the ticket is on Etihad (award ticket).
I am a bit concerned because the T&C's mention:
The Etihad Coach service can only be used by travelers who have a corresponding arriving or departing flight from Abu Dhabi International Airport on the same day. The service cannot be availed on any other day under any circumstances.
The Etihad Coach service is not available for use with complimentary and discounted tickets (ID, AD etc).
I assume the latter does not apply to award ticket, but I was wondering how strict they are if you take the bus the evening before a morning flight. If you can just add the service online to the award ticket, that would be great.