Everything went smoothly. The front man sees the reservation and directs you to the next avail counter and skip the waiting. If you need assistance in English, there's maybe 1-2 staff at the counter who can help or who'll you have to wait for. Only issue seems you can't make same day or maybe reservations the day before so I had to walk in and wait for my second test.

The service was done fast and hospitably. The result came earlier than expected.