If somebody has made it to lottery, what are the chances of getting petition rejected thereafter? Should the celebration be started? What is the rejection ratio after lottery?
If you feel like partying go right ahead
Just don’t link it to you actually landing in the US. There are following hurdles still pending:
Petition approval ( with of without RFE, RFE is a real pain in the a$$)
Your employer actually sending you.
Things can and do go wrong at any of the above steps.