If you are just re-registering your car, you just show up any time and go through their drive through. If there is a line it may take a while just FYI
It goes a lot quicker if you do. You check in from your phone and go inside.
They are very helpful. You can easily get an appointment online, but they worked with me one time I went without an appointment.
They prefer it, but I didn't have one and I got registered anyway.
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