Thank you for the very detailed response! I'll also be getting there on an award and doing the transit visa, so good to hear it works well.
I've never flown KQ before, so nice to hear a good review, but good to know we should plan ahead for dinner (anyway, the KQ flight to FCO leaves quite late, so having dinner beforehand makes sense).
Earnings on Flying Blue should be pretty much as good as with DL, especially as a FB Platinum.