I had an interview on the 27th of February, B1/B2, wearing denim with a polo shirt. In the end, Mine was rejected,
When they ask questions, give detailed answers instead of yes and no with short answers.
The first question is what's the purpose of this visit: don't give it's vacation,
You've got to spend your leave dates, and so they should be spent with your family.
(I assume this is what I fucked up)
Make sure you have the following document:
DS-160,
Bank Receipt,
Appointment confirmation
Be there for 10 minutes before the appointment.
All the best