I arrived 30 mins early, the desk outside checked my DS 160 and told me to come back in 15 mins. I went for a coffee around the corner. I went back and went through the security scan and proceeded straight up to the main reception. My DS 160 was checked again and I was handed a piece of paper with my reference number on it. Up the elevator to floor 1 and around to the left.
Then I waited for maybe 15 mins and got called. The American gentleman wanted to the documents they needed from me, maybe taking just a few of the 12 pay stubs I supplied as income evidence for the i134. Fingerprints on both hands were scanned. He also gave me back my chest X-rays from the medical. I was then asked to sit back down and wait to be called by an office.
My advice, triple check all your documents because those people being seen before me who didn’t have all their ducks aligned, spent much longer at the desk answering questions. My entire exchange was no more than 2 minutes.