Visa Stamping from Canada/ Mexico

I wanted to share my experience for H1B Extension stamping in Vancouver, Canada. My appointment was on 04/27/2016, I reached around 7 AM here but they did not allow me to enter until 8:15 AM since my appointment was at 8:30 AM.
I had to pass through a security check up, they don't allow any electronics or backpack within embassy, but provides you a small locker to keep your cell phone safe.

Once I pass through security, I was asked to go in Line "A" where they verified my passport, I797 etc. after that, I had to go through ten-prints, and then moved to 20th floor for Interview.
It was a long queue , but finally got to a VO. he asked below questions:

-> what company do you work for ?
-> show me your LCA
-> show me your paystub ( I did not carry paystub,so I showed them W2 form & employment verification letter)
-> Job title
-> how long you have been on H1B visa so far?
-> have you changed your employed before?

after that, he said, your visa is approved, and you will get it in 3-5 business days.

I came home & checked status online at CEAC website, it was showing "under administrator processing"

here is complete status change:

04/27/16 8:30 AM - Visa Interview
04/27 10 AM - status changed to "admin processing"
04/28 2 PM - status changed to "Issued"
04/29 - Picked up passport