Let me first say congratulations on that cause the waiting period is something else. I try not to think about it too much as I am waiting on my AOR.Depends on if the immigration officer has concerns. I was expecting the worst and to my surprise the application was competed just two months after I received AOR. When I applied, the estimated time for processing was 23 months. My wife's was finished exactly 6 months to the day of me submitting the application.
I'm really hoping for the best but if an interview is needed then so be it.