Upgrades at Dusseldorf (DUS) Germany
I have an upcoming 3 week trip to Dusseldorf and have booked an Intermediate car. I'm currently 5 star status. I've rented from this location before when I was President's Circle, but they refused to give me any upgrade. Ended up with a Ford CMax. They even stated my Gold status was not in their system. Any tips on getting an upgrade at DUS? I would think at a minimum I should be able to get a full size (3 series, A4, C class) upgrade.