I had my interview yesterday and got approved!! 😄
There were 2 rounds, first with a gentlemen who I gave my interview confirmation email and passport + 2 US size passport pictures of me and originals of my birth certificate and police certificate. He then asked for the updated letters of intent with both of our signatures. Then he asks for the MRV fee proof of payment and Affidavit of Support (Form I-134) with supporting evidence (I handed over my fiance's letter of employment from his manager/boss and also his W2 and tax transcripts for the last 3 years). He asked a few questions like what's what's the best number to contact you and when I plan to travel + other simple questions. I sat back down in the waiting area for my second round.
My number got called again on-screen and this time it's a female, she makes you take an oath and then proceeds with the questions. Below are the questions she asked me:
1. When did you first meet? (I asked for clarification and she said when was the first time you knew about each others existence).
2. What are your wedding plans?
3. How many times has he visited?
4. Is your family happy with you moving to the USA?
5. What State does he live in?
6. Has he always lived there?
These questions will probably be very different and mixed when its your interview as I'm sure there's a pool of questions they pick from so don't rely on them asking the same questions for you, too. Hope this helps as general guidance and good luck with your interviews!