Sorry if I'm being dim here , but I'm having a problem understanding the sterilising thing. We have a 9hr flight to the US with 14 week old dd coming up. I had thought that if I sterilised her bottles at home and took them full of water, I could just add the forumula powder when it came to time for her to eat. But there is lots of chat about disposable sterilised bottles and getting cabin crew to sterilise etc etc. Have I totally missed something? Never done a bottle on the move before and the sterilising stuff is still v new. Can't I just take 4 of my own bottles full from home...? Please help!