Originally Posted by
mechteach
Bring twice as many diapers and wipes as you think you will need, and a spare outfit for each kid in case of potty accidents or airsickness (have the 4-yr-old go to the bathroom right before you board).
And, as another poster recently pointed out, a change for yourself as well in case you're caught in the crossfire of said accidents. The last 6 hours of that flight would seem an eternity if you had something gross on your own clothing.
