L1, L2 Visa

First of all I would like to thank everyone for information shared.
I had my L1-B visa interview recently and it was a good experience.
I scheduled my OFC and Visa Interview at Chennai

OFC:-
I reached OFC office 45 minutes before appointment time along with my family. I have small kid so security came and told us to go directly instead of waiting in Queue.
We went inside OFC office and entered to the first floor. There is another small line and we stood in that line.
Two employees are assisting all applicants. One employee is informing to all members to take out Appointment Confirmation Letter and DS-160 and passport and other employee is verifying the appointment details and DS-160 details against passport.
After verifying your details you will be allowed to go inside by security. At reception you should give your passport and they will provide you token number.
After getting token number you will be allowed to big hall and according to token you should go to appropriate counter.
Note: If you have kid under 14 years then you should carry 2 passport size photo graphs of your kid. Parent who is holding the kid should carry the photographs.
Once you reach for appropriate counter you need to give passport and token. They may ask your name, date of birth and place of birth, etc.., and verify those details against passport.
They will take your photo graph and biometric and put stamp on DS-160. They will inform you to carry the same DS-160 for your Visa Interview.

Visa Interview:
We reached Visa office little early that is one hour before the scheduled time. There is a long queue outside Visa Office. Initially all people are standing in same queue and after some time security people informed all to form 2 different lines depending on Visa Interview timing.
People who has appointment at 7:30 A.M given priority and they allowed to another queue which is at entrance of Visa Office. Once that line is completed 8:00 A.M scheduled people are allowed.
Again at entrance people who carrying kids are getting allowed directly instead of standing in line.
After security check you will allowed inside. Inside Visa Office employees are helping to arrange documents in order as required by Visa Officer.
For L1-B you need to pay Fraud Prevention Fee. My company provided me DD for the same. One employee informed me to pay the Fraud Prevention Fee at one counter and did the same.
After paying fee they will provide you a token and allow you to go inside for Visa interview.
Your token number and counter number information will be displayed on the screen. We need to wait for our turn.

V.O: Good Morning with smiling face
Me: I also gave smile and greeted him with Good Morning

V.O: Which company is sponsoring your Petition?
Me: I told my company name

V.O: What your company do?
Me: I explained company nature of business

V.O: What is your specialized knowledge?
Me: I explained about my specialized knowledge in 2 sentences

Some more questions about company product and what is my role in product i.e., building H/W or S/W.

V.O: How many days you will stay in U.S?
Me: 3 Years

And he started doing paper work and finally golden words from him saying “I am approving your Visa and he provided 2 copies of I-129S one for me and another copy for employer. He also informed me to carry I-129S while travelling to U.S. He kept our passports for stamping’

He didn’t asked any question to my wife (L2 Visa)

I said Thank You Sir and Have a good day.

Finally I can say one thing i.e., prepare well about specialized knowledge and your roles and responsibilities. All the very best!