i flew northwest on the longest trip of my life(36 hours door-to-door)....i was by myself with a 2 year old and a newborn (5 weeks old).
flights were cheap and the price for the newborn on my lap was only $1800 less than if i bought her a seat, so i did. we had three seats in a four seat row. and on BOTH flights they put a single man in the fourth seat even though there were other empty seats around!!!! i was breastfeeding but thought, i hope he complains, and then they'll move him... no such luck!
the leg from japan to portland had individual tv's so that was FANTASTIC! they had about 6 or 7 different kids cartoons on. the only one i can remember though is happy feet. they had the same on the return flight, but there were so many, it wasn't a problem. they provided the earphones, but i found the 2 year old only played with them and was content to watch the tv without them.
the air hostesses were NO HELP whatsoever... they looked completely put upon when i asked them to just watch the sleeping baby while i took my 2 year old to the bathroom with me. (the only part of the trip that he cried was when i flushed the toilet!)
food was NOT appealing, especially to little one, so i packed lots of healthy and not so healthy snacks (including my bribery food: m & m's!). you just have to MAKE SURE that you finish or dump ALL fruit etc before you get off the plane! or you will be in big trouble!