Adjustment of Status - I-485

I'm grateful for all the insight I receive from this forum and I want to share my interview experience which took place 2/18, a little more than 12 months after my PD.

We had lawyer prepare our documents but not accompany us to the interview. We are legit and our papers are in order and didn't feel like paying more for the service, and thought it wasn't necessary.
We arrived 15 minutes early at Federal Plaza in NYC. You go through security downstairs (fast) and then past a really grumpy, bossy old guy outside the interview area. Check in at the window with the original (or re-copied) form that you were mailed. They need the bar code.
Don't be late! And if you are, be polite. I saw one woman arguing with her interviewing officer before she even got called in. He said she was late and she defiantly said "No!" she wasn't, she'd arrived on time but had to go back and get the form. No apologies or humility. I can't imagine the rest of her interview went well.
I saw people in waiting area with ripped jeans, mid-riffs, backward baseball caps, which to me just says that they don't take this seriously.
We waited for only about 15 minutes. Got called in, were asked to swear an oath.
Our officer was efficient, not friendly, but not rude.
She specifically asked for original documents: marriage, birth, passport, etc
She asked us to lay everything on her desk that we wanted to submit to be considered for our file. She didn't "ask" for anything. Whatever we wanted. I had a huge folder of shared utilities,, insurance, taxes, etc and submitted it all. She wanted everything out of the envelopes.
She questioned why my wife had "single" still on her recent pay stubs. My wife explained that it was because she wanted a high deduction of taxes. The office thought it was odd to be giving 2 branches of government differing information and wife assured her she'd change immediately (again -- humility, deference, etc).
We presented her with our photos (about 100) and she selected a few to keep: wedding day, quite a few with friends, photo with my parents.
She asked my wife some questions: my where I've lived, where we met, when we started dating, conditions of my divorce, ex's name, my parents' names and occupations, sisters' and nephews/ nieces'. Nothing unusual.
One advice here is for spouse to be very familiar with information provided on forms submitted. My wife got confused with the chronology of my moves (I've moved for school and work). She stumbled about my address in 2015 although I was actually living with her at the time!! The officer saw passed my wife's confusion, but it would have been better to have had a smoother delivery.
The officer asked me a few questions. About wife's parents, sister, where she works, her ex-husband, but not as many questions as my wife.
I thought she asked very few questions and we were prepared for much more.
She asked for my updated medical as it had been 1 year + 2 weeks. I had not had a chance to pick it up the previous day (medical clinic nightmare!!) and told her I'd be back within 2 hours with it. She said that was fine, but any later would delay our filing by months (I was back in an hour!!).
She gave us the 120 day pending notice document.
I left thinking the interview was good, but not great. Wife really could have put more effort into telling our story, but it was early, she was nervous.
Then I spend the whole day stressing about it and thinking maybe the officer asked so few questions because of this or that and we should have said this and that and it was very stressful.
BUT... I got an email from my lawyer at 10pm forwarding notification that the case was approved and card being processed.
Card arrived a week after interview! So happy!

Based on what I've read on this forum, my advice is as follows:
Get your act together. I don't agree with the attitude that "everything will be fine." It won't! Be prepared with what they ask. This is no joke. A big struggle for me was convincing wife to get all our material together. We are a legit couple so she didn't think we really needed labels on our pictures ("who does that?") or shared utilities (she has been in her apt for 10 years before I moved in and has auto payment).
Give them what they are looking for. Be over-prepared, organized, polite, efficient, courteous. I've seen so many messy situations on this site. If you don't have your original documents, try to to change the interview date and arrive totally buttoned up and ready to deliver.

I'm incredibly grateful for this huge privilege, and I worked hard to get it. I intent to put it forward and be an honorable permanent resident (I volunteer with ex-cons and with new Arab refugee immigrants!)

Wishing the best for all well-intentioned, deserving, aspiring friends out there.

I hope this helped.

Good luck!!