We will be flying to start our new life in Hong Kong soon. Trouble is our flight is at 10.30 pm. I am sure that my daughter will probably sleep in her buggy the 2 hours we have to be at the airport before the flight and then wake up full of beans. Any suggestions on how to keep her asleep or get her back to sleep quickly once on board? I am not looking forward to a 11 and a half hour flight on my own with her and my 5 year old! Help!