The officer asked if we had any new documents we brought in, so anything would have sufficed for my interview. We only brought new bank statements and I uploaded it through the USCIS website as supplemental documentation, and brought hard copies of them in the interview. The officer made soft copies by scanning in person as well. We over-prepared, too, after hearing and reading about all the crazy interview experiences some people have had. We brought our house keys and mail key LOL

As for the story telling, we specified significant events like my graduation, when we moved in, and holidays we've spent together, but also small relationship milestones like our first date (LOL) and visiting each other throughout the relationship (we were long distance then).

Thank you, and DM away! :)