L1, L2 Visa

Thanks for the forum posts, which I regularly browse through and will update myself on the questions for L1.
Here is my visa experience for L1B Individual Category:
* L1B - Regular Processing - Received RFE - Approved in Dec 2016;
* Visa interview scheduled for my Spouse as well as my Kid (4.5 years)
* 2nd March: Biometrics: Chennai - Me and my Husband alone we went. 12.00 PM queue, reached 10 mins before and was allowed to go inside. In the queue, our Passport and DS160 will be arranged and be given to us and need to wait for the token in a counter. My turn came, we just need to keep fingerprints and were asked to be there before 15 mins prior to the interview.

* 3rd March: PAI interview: I took my Kid as well. We went in our own car; My husband managed to find a parking place opposite road to the Oxford.
 Interview appointment time: 10 AM, but we reached by 9.20 and showed our passports and were allowed inside.
Every where we were being checked if we carry any electronic items; we left everything in our car. Just carried a plastic bag with files (any type of files, as there was not checking today).
WE were asked to remove our watches (ordinary).
We kept our passports and our plastic bag with files for scanning.
Were asked to go to counter where they verified our passports and marked and asked to move to another counter
There we were asked to reverify our finger prints.
Next were asked to wait near a row of people where I was asked to wait for L1INdividual category.
Then came the counter name where we should appear for the interview.
1. My previous person was L1B Blanket - was explaining his skills. But the VO Officer said that it was not approvable.
2. My turn:
   * I wished the officer with a smily Good Morning, he responded well and asked me 'how are you'. I responded and asked him too. He gave me a smiling reply.
   * me: I gave our passports (three of ours) to him, he gave an appreciative smile.
   * VO: He asked me to wait for few secs.
   * VO: Asked me 'yours is L1 Individual?'
   * me: Yes
   * VO: You work for XX company
   * me: Yes
   * VO: What is your Client
   * me: XX
   * VO: What is the specialization of the manager whom you report to.
   * me: I didn't expect this question. But I managed to answer my Account Manager's role.
  * VO: You have your I797 with you?
  * me: Yes Sir, here it is and I gave it to him (original)
 * VO: verified and returned back.
 * VO: What will you go and do at US, your roles?
 * me: I explained with good confidence, about my project's role at onsite.
 * VO: Turned to my husband and asked, 'Where did your wife complete her Master's degree'
* my husband: Replied with the response. XX university.
 * VO: How old is your kid.
 * my husband: 4.5 years old.
 * VO: to my kid: How are you?
 * my son: I am fine.
 * VO: to my kid: Whats your name?
 * my son: My name is XX
 * VO: laughed and replied, that's very glad.
 * we: Thanked him.
 * VO: Your Visas are approved. Thanks for spending your time today here.
 * we: Thanked him too.