The ship has docked and the carriage has reached the station; having reached the destination of a journey.

历经一个月的艰苦旅程，咱们总算是船到码头，车到站了。

The job or task is over; a metaphor for finishing one's tenure or reaching retirement and being able to relax.

既然已经退休，就该有船到码头，车到站的思想，好好享受生活。