I will begin with a sincere thanks for all the information I have got from these forums over the last few months and the amount of confidence I have gained through it.
Now, its my turn give back something by sharing my experience and hope this helps in giving some information to the others like me.
My visa was scheduled for 08:15 AM I reached the car parking in the nearby Malcha Marg parking by 7:45 AM. It is few minutes walk from there. I reached embassy by 7:55 or so. I was with my wife who would get an H4.
If anyone's interested: I had an appointment today for H1B visa revalidation. Overall it was a smooth experience. I was asked for my paystubs though.
Degree etc was not asked for. Total interview time was 2 minutes. The only question I was asked was whether I am working for the same company for which I had received an H1 visa previously. In my case that holds true. I also had an F1 visa previously. US Degree.