Quick, efficient, thorough - I walked in my resume as well as filled out an application online. Got called in to an interview and they walked me through the send interview and drug test the same day.

Three rounds of interviews. If you're lucky, you'll do two rounds because two managers in the room are two interviews. Then the final interview is with the warehouse manager. Be on time; I cannot stress that enough, as Costco is a very time-sensitive type of position. You only have a three-minute grace period to clock in at your normal hours. Emphasize that you are very prompt and are ready to work through the probation period.