Re: Traveling without baby
i flew this year and had no trouble with TSA at all. declare it loudly at the beginning of the checkpoint. the first TSA agent looked surprised and said, "where's the baby?!" (i guess going on the old rules that baby had to be with you) but the next one had heard me say it and stepped in smoothly and said, "no problem!"
i put milk bags inside a gallon ziplock, then had a separate gallon ziplock with ice. i agree, no freezing, just refrigerate. i would dump the ice right before security, then refill at a restaurant on the other side; they tried to do extra testing/checking on me because some of the ice had melted and then it was just a "liquid" (gimme a break). luckily they were nice and just let me throw the ziplock with ice away, and i had an extra ziplock to get more ice.
i also appreciated the lansinoh bags because they're clearly labeled "mother's milk".
just as a heads' up, i did not manage to save all the milk i pumped when away for 3 days - by the time we were able to use it at home, some was spoiled. but i wasn't EP so perhaps you'll use it up faster than i did.
Nursing, pumping, cloth-diapering, babywearing, working professor mama with the awesomest SAHD ever.