H1B stamping mandatory if we come for vaccation ?

Hi we are from Mumbai. We got our H1B till Oct.2014 .We are planning to come for my brothers wedding in Jan 2014. Is it mandatory for us to go for visa stamping at the consulate even though we have visa remaining for 9 months ? Pls guide so that we can plan accordingly. Thank you!

If you have unexpired valid visa stamped in the passport, then you don’t need to appear for another visa stamping. You will need both valid visa and unexpired valid 797 petition to return to US.