Basically the title.
My wife's appointment is scheduled for Jan 7th, but for reasons related to my work, it would be so much more convenient if we could get it done earlier - sometime this week or next, ideally. I have heard of people who just show up to the appointment, even weeks earlier, and walk-in and get it done. Is this common/ acceptable? Should I call the office and confirm with them first if it's okay? I would much rather wait until the designated date than go through USCIS's formal rescheduling process.
Thanks in advance!