Thanks girls. I only got the idea cos a friend with 3 girls (two are older than poppy) said she did that on the plane.
Ah on our last flight which was a year ago, we did just that - pulled the seat rests up so poppy could lie with head on my lap and feet on bb's lap. Or the other way round. Wr tried everything. Blankets, pillows, neck pillows. Jackets... It was extremely uncomfortable for all. And that was only a 7 hour flight I think.
She's grown taller over the past year and don't forget, poppy is REALLY tall! Think America's Next Top Model kind, she's all legs legs legs. I scared! Bbp I really hope to get an empty seat next to us!
Yup we got a night flight. But the best (shortest) I think leaves at 1am :S sigh if only we could teleport!
Anyhow, a kind friend is lending us her car seat. Let's check with airline and cross fingers!