Adjustment of Status - I-485

Just wanna share my experience, might come useful to someone out there.

AOS through marriage to a USC(Jan., 2017)
PD: 02/06/2018
EAD: 05/23/2018(Expedited)
EAD Renewal 02/26/2019
Interview Notice: 03/21/2019 after requesting for a renewal of EAD.
Interview: 04/25/2019. 8:45am
Irving, Texas location
Card in production: 05/21/2019
Card was mailed: 05/23/2019
Card delivery date: today, 05/25/2019

Got to the venue at 8:30, there were lots of people in there but was called in 10mins later by a young black adonis dude who didn't pronounce my name quite well till he spelt it out, then we joked bout the pronunciation and told him a rapper here n US is my name sake, then he knew how to pronounce it and said the rapper was his boy and he kept pronouncing my name.

Got in, demanded my ID, passport, EAD card, but I included my SS card. Then he told us to stand to take the oath.
He already had my form AOS form right in front of him, in fact all forms were piled together but AOS was at the top.
He said he was gonna ask me YES/NO questions and all required of me is to answer yes or no and if there is need for me to enunciate further, he would demand it.
After that, first thing he asked was Joint lease which I had the lease with rent payment receipts attached, told him I got lots of them then he said he would just scan through and select what he needs but none was returned. He asked how long have we be staying at the current address and asked for my wife's ID, guess to verify the address but my wife just had the time to go change to the new address a week before the interview after telling her a long time to go change the address( I don't care attitude). But the printout paper from dmv(had the cut off old card copy on the same paper) still represents the actual card as it is valid for 2weeks before the card comes in via mail.
He asked when did I enter the US, on what purpose(F1 visa), how long have i been working and where, have I ever worked in the US illegally, asked for my DOB, my parents names, my wife's name, her DOB, asked to confirm our old address, then my wife told him one of the reasons we moved, then he got to know my wife is pregnant with twins(7months). He asked to confirm my SSN which I saw him filled it in on the AOS form, gave me the form to sign my part and he explained why, and he signed his own part. Later he talked about the twins we are having, then I asked how he knew she was pregnant with twins, as I wasn't paying attention when my wife did mention it to him. So we joked about that as well.
In between these questions, there were jokes chipping in, and we all laughing and all that, told us he's from Missouri.
Finally he gave a white paper explaining my case would be under review before handing it over to me, and explained to me that since our marriage is over 2yrs, when the decision is made, i would be given the 10yrs GC and it would come through the mail just the way I received my EAD card and that at this time, no additional documentation is required, that there MIGHT be a second interview and there wouldn't be any need for me to raise any request as it takes 90days and if nothing happens, I should raise a request(all the explanation is just the norm if not approved on the spot) and he told me specifically that he believes it won't take that long. At this time he almost dismissed us with no reason for not approving us on the spot as I have prepared way more than expected with much valid supporting documents.
I was shocked that he didn't ask for other supporting document, not even those stated in the interview letter which I have compiled and set them accordingly as requested. Then I had a list of lots of supporting documents all well arranged with about 30pics.
So i went ahead, telling him that he didn't even ask for pictures, not even some other supporting document as requested on the interview letter and he said okay, I should let him see, that he would select some, which he did from the pictures, then i went ahead to tell him again that i brought lots of supporting documents and he said i should let him see. So he asked if my tax document were in there, bank statements, “of course they are...common now, stop playing with me". Gave him my list I prepared, then he was like wow, you came in really prepared for this...I said HELL yeah I did!!! “I didn’t come to just joke with you and leave!” I said these documents in colored printouts I brought that looked original copies, are all for them, it is now their property not mine anymore.

To be candid, I was a bit nervous which was kinda obvious as I'm kinda a shy person speaking to someone the very first time, let alone an interview, together with the experience of interviews for Visa purposes in the past. I don't like that feelings of denial, not meant for my spirit...lol

Lesson I wanna put across, as he was about to dismiss us, I just didnt leave, I had to let him understand I have brought stuffs meant for them to ever be in my file which would assist in making a positive decision and in my favor. I didnt just walk out and bring them back home. I have my own copies for future references. Remember, that was when he realized that I have really prepared for this and he would realized that all my document were highly organized for easy perusal and verification