Last trip to DW we drove so we were able to pack a fridge with lots of food. This time we are flying and I'd still like to pack food but unsure what kinds would do okay in plane. We have a small cooler that can fit in a suitcase. I'll probably bring bottled water, snack stuff, juice boxes, etc. and put them on ice when we get there. Will sodas do okay in luggage? Also what kind of breakfast foods could I bring? Do they sell milk at the Pop food courts? Any help would be appreciated!!!
Just wondering as it would help with ideas.... 
but yup.lots of pop tarts, individual peanut butter strips, granola bars, single pouches of powder juice drinks that for taste if you plan to drink the tap water at the park.