I flew KLM only once as it was the most convenient flight. Firstly the flight out of Tokyo was 3 hours late. Then the service on the plane was atrocious. The flight attendants kept stepping on my feet as they walked past and never even apologized. Finally when I came back to Tokyo from Paris, they said they "forgot" my suitcase in Paris and I had to wait 2 days to get it back, without any compensation for my out of pocket expenses. Overall, it was a terrible experience. The whole airline from the top to the flight attendants are rude and arrogant, and provide a pathetic service at an expensive price.

You'll be better off paying less or more and going for some other airline. I have flown many different airlines, and KLM is by far the worst. I have no idea how they stay in business.