H1B, H4 Visa

Hi,

Thanks to all who shared their experiences on the forums about VISA stamping.
After 3 times rescheduling my interview, finally I have OFC appoint on 16th Dec at 3:30PM.I reached office by 2:40 (by keeping HYD traffic in mind) along with my wife and kid.

We went to the gate at 3:00 PM and security person allowed us to go directly inside because we have Kid (we can avoid all queues if we go with Kid).
All the process inside completed within 15min and came out by 3:15PM even before out appointment time.
Ensure to carry photograph of the child while going for fingerprints. They pasted the stickers of DS160 confirmation barcode on the passports and stamp on DS-160 barcode pages.

The main interview is on 17th Dec at 12:00 PM.
We reached consulate gate by 11:30AM similar to day before. they verified appoint confirmation page, passports, DS-160 and asked to keep the I797B in Hand.
went inside and seated in waiting area, after 5min we were issued token and proceeded to security check (keep the Photographs as backup, in case any issue with previous day photo they will ask again).
avoid carrying anything other than documents it will further delay the process inside. (for babies you can carry Milk)

We are waiting for our turn to call and finally token displayed on screen to proceed to window counter. There are 3 people standing before us in queue.
The lady VO is asking the questions fast one after other without gap for guys standing before me and she continued in same way for me as well.

Me: Good Moring Officer
VO: Passports please
Me: I have I797B in my Hand and tried to give her.
VO: only Passports sir no other documents
VO: Who is your petitioner sir
Me: YYYY X answered.
VO: Who is the Client
Me: YYYYY answered
VO: What is YYYYY do
Me: I started answering and
VO: put your right hand on the scanner.
Me: I have placed hand on scanner and completed my answer
VO: (to my wife) How long you been married mam
My wife: X years.
VO: who will use YYYYY products
Me: answered couple of clients mentioned in YYYYY website
VO: (to my wife) put your left hand on the scanner
VO: Which place you are going to stay in US
Me: YYYY X answered
VO: how much you will earn
Me: YYYY X $ answered
VO: B.tech or Masters
Me: Answered
VO: Thank you, your VISA approved and next…
Me: Thank you and left the counter
All she completed interview in 1-2 mins, it seems they have the data ready with them to approve/refuse upfront before we reach there.
I got mail in second day (Friday) after interview to pick up my passport. There will be longer queues for Passport collection so be prepared. and we need to carry copy of PASSPORT, Original ID and authorization letter signed from family members to collect their passports along with ours.

The key is to be confident and ready with all the documents you have.
reach the consulate before 1 hour to avoid tensions with traffic/ travel etc..