Just wanted to be sure you noticed that while the pump does not count as a carryon, any ice chest would. I used to carry a small lunch box in which I could put a freezer pack, then stuff all that into a two gallon ziplock in my backpack. If possible, then, yes, I recommend it all be frozen, and that the ice packs be the solid kind, not ziplock bags of ice (which I have seen rejected by TSA). Much of what goes questioned or pulled is at the discretion on the individual TSA officers and manager on duty, so I also suggest the you capture a screen shot of the linked page from @SWDigits. Helping them see the rules might be important. Good luck and and have fun (or get some sleep) while on your trip. I hope all goes smoothly.
... View more