Yes, you can make an appointment.
I'm not sure if you can an appointment or not. I have been to the office three or four times. You just sign in and get assigned a number. Even when the office was full the longest I have waited has to be less than an hour. Maybe an hour at most. Best advice I can give is just make sure you have all your documents and whatever else you might need. It's better to bring too much than not enough. So you do not have to make a return trip.
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