Gacmaska,
yes everything is done on the assessment day and their are two elliminations throughout the day. There was around 80 people on my day and about 20 got to the interview. My actual face to face interview lasted about 20 mins and they will ask you customer service based questions and may ask you to explain an answer with an example from your past. Some people's interviews did last longer than mine.
After the interview stage at the end of the day, I waited 3 days until I got the "happy to inform" email.
Remember to just be yourself in the interview although I know its hard to not get nervous. However the etihad recruiters should put you at ease because they were really nice, friendly people.
Good Luck!
