Here are some tips.
1. Bring a big bag which is convenient to pull things and put things.
2. Bring toys.books. distractions.
3. Bring infant/baby food even if the airlines says they will provide. Because they didn't on our way to Manila.
4. Charge all your gadgets
8. Travel in PJs. And bring extra clothes!!!
9. Fill up milk bottle before alighting.. because you never know if your final destination has easily accessible water station or worst if you get stuck in horrible traffic (heard Manila can be as bad as 5 hours)
Now good luck. May the force be with you.