If you know SAS, SQL well then you would have edge over others in the interview. My interview was on case studies, puzzles, SAS queries. Also, concentrate on how SAS works on the back end. Knowing only how to write a query would not be enough.
For instance: Which statement works faster? where or if? Why?
How does PDV vector work?
Qualities: Work/life balance is very book
It is a people-oriented organization, so if you are good with talking to people, making networks then it would be the best place to be in
You could move from one team to another. Try to be in touch with people in RIM department. It is called Amex's brain.