You might want to call NW WP and have them look into Kenya Airways (a partner that flies to NBO from AMS). I don't think this doesn't come through on the WPAA Lister, unless it comes across as a KLM codeshare in WPAA. Last January, I was able to travel to NBO from AMS using Kenya Airways. The flights were not crowded, the service was pleasant, and the plane was new.