guys, thanks for the input. I\'ve got my passport stamped
It went smootly. I went to SF INS aroud 9:50 am and got out of there around 11:30 am. It\'s not necessary to go there early \'coz if you are called to stamp ur passport at SF INS, you will enter the building through the gate on Sansome street, which is different from the gate other people lined up for. Good luck to everyone!!