I have flow to Oz three times with little people and have some knowledge of the regulations , It is against flight safety rules for a child to sleep on the floor . If discovered the parent will be asked to wake the child and put them in their seat or on your lap , if you hit proper turbulence you will soon see why .
If using a Childs car seat it must carry the FAA approval sticker and have approval from the air line . 18 months ago their were no approved seats for sale in the UK .
Now people will have anecdotal evidence to the contrary but these are the rules at present .
Ask for the basinet if you can ,it is too small and your kid won't fit in but you will get a bulkhead seat at least.
I used to fly business as well but I have kids now and will never be able to afford again , did fly business once at the beginning with a 15 month old , what a monumental waste of money that was didn't watch a film , didn't get time to eat the food and didn't even recline the seat:cry:
And finally if you are relying on your child/children sleeping during the flight ; good luck with that ;-) :mad: