Help with KLM upgrade
I am flying RT MSP-JRO via AMS in Sept 2013. Using a SUG cert I was able to get upgrades on the DL segments MSP-AMS and AMS-MSP. But no upgrades are available for the KLM flights, AMS-JRO-AMS.
How can I optimize my changes of getting upgraded on the AMS-JRO-AMS flights? If I am not upgraded in advance, can I still ask for an upgrade at the gate?