I showed up half an hour before opening and was the second person in line out of eight by the time they opened. They had three walk-in appointments, one at 09:00, one at 11:00, and one at 2:30 PM. After we got our appointments scheduled, everyone else was sent away. Be sure you arrive VERY early, and be prepared to miss out anyways.
Yes, but only first thing in the morning or sometimes in the afternoon. If you're lucky and patient, they can try and help in the afternoon. Good luck.
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