I've now down my first transatlantic flight as Pandion.
I arrived in COP and my request for upgrade was sorted. There was a lof of people trying to get upgrades and the queue was extremely long and the boarding had already started. So I tried to get contact with the staff and one of the staff saw my Pandion card and put my mind at easy by saying that it had been taken care of and I had a new seat. So I boarded and the purser did a special welcome to myself and also it so happened that the person sitting beside me was also Pandion.
Throughout the flight, the crew had a special attention to us, so it was OK as a flight in C could be.