I've only done international jump seat with United at NRT, and that was a few years ago, though the process worked pretty smoothly.
You request OMC at the ticket counter. Depending how full the flight is, they may issue you a gate pass to proceed through security. You may also have to wait in the counter area until 30-40 mins prior to departure on a full flight before they allow you to pass through security. You have to pay the international departure fees at the ticket counter.
You request OMC at the ticket counter. Depending how full the flight is, they may issue you a gate pass to proceed through security. You may also have to wait in the counter area until 30-40 mins prior to departure on a full flight before they allow you to pass through security. You have to pay the international departure fees at the ticket counter.