We're going on vacation in a few weeks. We will be going through 3 layovers, in the air for the majority of the day. Flying from 6 a.m. until about 6 p.m. or so. I need to take EBM with me. How do I travel with the milk? It has to be checked with the bags, correct? Will dry ice keep it frozen until I get there and get it into the freezer where we're staying? I realize the risks involved in putting my EBM on an airplane, as there is a chance it could get lost somehow and never seen again. I just need to know how to transport it and keep it frozen, because while it will all get used while we're there, we're going to be there for 7 days, and I know thawed BM needs to be used right away.