Last I know that they closed online appointment for the month of July. They open at 8 and I was there at 7.30 AM without appointment amd I was done by 8.44 AM. May be I was lucky. If online appointment is open, you certainly must take an appointment, if not, go there as early as 7ish and get done in an hour.
Online appointment is best. If you just walk in you may be there for the whole day
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