I attended interview for Stamping last week. All went well. 

I had to wait for long time before Counselor call my name. I also met couple of other person who have H1B stamping and received their VISA. I am not sure why but they called all the H1B candidate at last once they done with other candidates like F1, Tourist etc.

The interview was very short may be couple mins.

Counselor asked me few basic questions like

- What do you do at work?

- what is you company?

- what's your position?

- At which city do you work? Do you like the place?

- He also gave me some information about Foreign workers and their rights in United States provided in a booklet.(Booklet was given by them when you present your documents at first)

That's all, He then returned my file and handed me a small White color card to pick my Visa in two business day.

I picked my Visa and also went to Department of Foreign Employment located nearby TINKUNE to get the Certificate as no_more_crush suggested above in his post. 

I hope that helps!