We had booked no hand luggage tickets to and from Athens, but we were happily upgraded for free on the way out. As a BA Silver member I usually check in at the priority lanes but we were directed to the dedicated First Class check-in area (only my second time using it). Service was excellent with good food and champagne. The flight was delayed due to a technical issue but the pilots made up for lost time en route, so we ended up only being about 15-30 minutes late. As such we were still able to make our local connection to Santorini.