I talked to my wife and she said she had very good experience at her interview except that she had to wait almost two and half hour before her token number was called. They asked her the below questions:
1) Who is calling you?
2) Name of your husband?
3) What does your husband do for living?
4) Name of the company where your husband works?
5) Love marriage or arranged marriage?
6) Who arranged the marriage?
7) When did your husband visit you last?
They did not ask for photos, chats, tax return (they said since we already have your husband's 2016 return, we don't need anything). They kept her PCC, my pay slips (February to June), marriage certificate, her birth certificate ( not sure if it was original or a copy).
We couldn't get more beautiful gift than hearing "VISA IS APPROVED" on our first marriage anniversary. We THANK YOU each and everyone on this journey for making it easy. GOD BLESS YOU ALL and LOVE YOU ALL