Went to Fairfax VA location for AOS interview. Pay parking lot behind building. Arrived about 30 minutes early. Many people waiting, but turned out a majority were for a citizenship ceremony. Called in about 15 minutes after our scheduled time. Very friendly easy-going interview, with interviewer making a few jokes. Asked me and spouse to confirm personal details, went through standard questions, asked where and how we met, and then asked for further evidence of our marriage, which we provided. Told we'd likely hear later that day, and around 5pm got confirmation that 485 was approved!