Thanks all, we left home earlier on your advice and it helped.
So our experience was overall pretty bad indeed, and I can see it could have been even worse.
- nasty traffic to JFK, no choice for us with heavy bulky luggage.
- over twenty minutes wait for SkyPriority check-in. The agent tried to not connect our luggage (flying JFK-ORY-Corsica), saying it is impossible in Orly… I had him bring the supervisor and it was solved. He did not even say anything, I had to check the luggage tags he printed and then he came up with that lame excuse.
- pretty quick security check, but only because we have TSA Pre and were lucky. Hell for others.
- indifferent staff in the lounge, very poor shape (see picture of the seats, a complete shame in fact), food offering atrocious, it could have been an American Airlines lounge, that bad…
- still no champagne before takeoff, no aperitif before meal, minimal service by the staff (hot dish served without wine nor water refill, service generally rushed).
- good foie gras, beef and crépinette, on time arrival.
- one immigration officer, yes one, and all Parafe gates closed, the other officers trickled in indifferently over 10 minutes while their colleague was still processing the first two passengers.
- connection security gate closed, we had to pass customs and re-enter through the regular boarding circuit.

Overall, a not very pleasant experience, once again. The staff do not care and are giving up.