Our flight from JKF to Frankfurt was very nice. It was a Delta flight; but the New York based flight crew, I believe, worked primarily for Air France. The service was excellent! Also being a longer flight some of the things that you have to pay extra for were free. Free movies on a mini TV in every seat, a little pillow and blanket for every person. Two meals with wine, beer, soda, or tea. Usually I deny myself the luxuries of airline travel because I feel like I'm being nickel and dimed to death. But this flight was so nice I spent a bit extra and bought myself a few hard drinks. - Which also helped me sleep which was very important.
You see I didn't sleep at all Wednesday night, I get a bit nervous before traveling. I like to stay up and try to think about everything that I forgot. But when traveling a long way East there is another reason. We loose 6 hours! So if I don't prevent jet lag I can't wake up before two in the afternoon, and I won't want to go to sleep untill the sun starts to rise. So I messed up my sleep cycle on purpose then forced my self to sleep on the second plane flight, and awoke in Germany at about 9:30am. It worked just right! YMMV.