H1B, H4 Visa

I had my H1B biometric and interview in Mumbai on 10th Jan 19 and 11th Jan 2019.Me and my wife both are in same domain so we were expecting lot questions for H1B for me and H4 for wife. Following is the experience.
Day 1 :Biometric scheduled on 10th Jan 2019 @ 11.15 am .
Entry was granted @ 11.10.
In the main office as I was having my toddler son with me I was given priority.
@ First counter documents were checked. Photograph of son was asked. Then I was handed over token number. There are 7 windows and token number for the screen is displayed on screen. When my token number came, I approached to the counter.name of son and birthdate was asked for verification purpose. Then it was my turn. I was asked my full name for verification along with birthdate. Finger printing and photograph was taken. In the meantime wife was taking care of son. She was not needed there. After my procedure was done wife was called to do her finger printing and photograph.
Whole process was over in 10 mins and we were out in just 20 mins.
Please note that during biometric they will stick receipt on your passport and make some validation by highlighting specific part on DS 160 confirmation of each applicant.
Please make sure to carry the same DS160 for visa interview .Also please carry photograph of kid as per US visa specifications.
Day 2: Visa interview scheduled on 11th Jan @ 9.15 am.
Reached gate @ 9.10.
Passports for all of us were checked and entry was granted. After security check we were let inside. VFS lady asked us to sit and she told that we will be granted entry on priority basis as we were along with kid.
Within 5 mins we were granted entry inside actual interview place.
There was huge que outside in waiting area and inside but being with baby we were asked to come forward.
1: VFS person took our passport and asked to come to window where fingerprinting was crosschecked for myself and wife.
2: Once done, we were assigned window for interview.
3: There was one person ahead of us waiting for interview. Once his turn was done we were called.
4: Once we reached @ window , son said hi to VO lady before VO or myself along with wife greeted each other.
5: VO was happy and smiled back and said hi to him.
Now the real thing starts.
6: Me: Good Morning
VO: Good Morning. How are you?
Me: I am good. How about you?
VO: I am good. Can I have your passport please?
Handed all three passports.
VO: So are you working for any company.
Me: Mentioned name of my organization.
Me: I will be working for this company and this is my client.
VO: Can I see your I-797 copy.
Me: Handed over I-797
VO: What you will do for this client?
Me: I will working as XYZ and mentioned the job role.
VO: What is your salary?
Me: Mentioned the salary as per LCA.
VO: So how long you have been married.
Me: Gave the appropriate answer.
7: VO was typing something on her system and handed white slip and said these are your rights as workers.
I knew at that same moment that I am through with the interview.
8: VO: Ok. Your Visa has been approved. You will receive it next 3-4 working days.
  Me: Thanks. Have a nice day and weekend.
We are out of embassy by 9.30.Visa interview lasted for about 5 mins where as in no questions were asked to wife.
My advice would be prepare for the interview by making your questioner by going through all experiences mentioned on this site for H1B and H4 also. You may hear cases getting rejected while at the time of interview but just ignore them and focus on your interview.
Be confident and be honest. Please go through LCA and CASE carefully.
For people appearing for interview with toddler, baby food is allowed inside. Make sure that kid has proper sleep and properly fed before interview so s/he remains active during interview and biometric.
Carry all documents in folder. Sack or phones are not allowed inside.
Last but not the least thanks to IMMIHELP for giving insight of interview.
Best of Luck.