It is a very long time my friend
Depends on when you get there and how chaotic it is. If you're late for you appointment expect to wait a while like 2 hours or more. If you're early/on-time, you will spend the majority of your time waiting for your door to become available. Once you're backed in, it takes only 2 hours to unload you.
Should be few hours from your APPT time.
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