I'm traveling in December from BKK/TPE/NRT and the second leg is on a 777. I was thinking that maybe it would let me get a coupon. Unfortunately, once I entered all of my details it was smart enough to tell me "Your itineries are not eligible for redeeming complimentary Wi-Fi Onboard coupon." (sic) Maybe if I tell them they misspelled itineraries they'll give me one?