Hii back, Sorry it took me so many months to come back here, and as promised I'll write my interview experience and the move to the USA,
I did write some notes that I have them right in front of me,
So upon arrival, make sure to be there at 8:00 Am minimum, there were people even before 7 am as they told me, i was there by 8:30 am and i felt like I was late, so there is two lines, one for non-immigrant and one for the immigrant visa, you take the second one, there will be a first check, it takes only a seconds and then you go to the entry of the embassy, you will be asked for your 2nd letter, your passport and a picture, and then you will be allowed to enter to the embassy, a last detailed check is needed, you leave there your mobile phone and bag, then straight in to the waiting room, it have a lot of seats, it was that day crowded with people because they didn't work the day before, so they moved people to that day, once I went in, I heard my name, and I went to pay the VISA FEE, I paid in USD and gave me two receipts, and then after a long wait, i was called to give my papers and asked me what language i prefer and choose English and went back to my seat, in beside me was a lot of people and you can hear all of the conversations between the CO and the others, except for the immigrant visa they were taken to room 7, so for a reason that I ignore, they left me there from 8h30 AM til 01:00 pm, i was the last person, and I don't know why, there was so many people coming after me but they just let me waiting there lol, I was in a Suit, and I wasn't they only one, and they allowed me to walk in the waiting room as i was so tired for setting in my chair, Finally when they couldn't call anyone else, they called for me lol, there was two CO, She asked me about my name DOB parents names and what countries i was in for the last years and asked for my old passport and asked me about the reason of my stay in every country i listed and then about my studies, my diploma, she want it to see it and even verified if it's genuine, they both verified it and they were glad it was, and then they asked me about the person I'm going to live with, asked about when he went to the USA, how, what does he work, does he have children, how do i know him, she asked honestly a lot of questions, more than what i was expecting, and then she said I'm approved, she kept my papers and i was wondering how will get back my high school diploma and I said can i please have my original papers lol, she said i can give you only your diploma, i said that's fine, that's all what i need, and here the last person out of the embassy, the next day my status changed to issued in less than 24h , after a couple of days my sealed envelope was with Aramex and i went to collect it the same day of it's arrival, and that's it, I hope my story is a bit helpful,