Living in Micronesia I always take frozen fish out of Micronesia and frozen food INTO Micronesia (so few damn stores).
Fish, fully frozen, in ice chests the 5 day cooler types can stay for the required 72 hours (CO has lost frozen and I've gotten them back later still frozen). Out here in CoMic land we have to wrap in plastic inside the cooler, then wrap the cooler in plastic also.
When we do frozen eel or other items sometimes we will take coconut milk and sugar and such make a local drink and put those in one gallon zip lock bags, it is not ice but the same dang thing, and double ziplock them up and we are good for ice that way.
For Platinum in CoMic land on international tickets as everything I do is international, if I'm in coach (never) I get two ice chests. When I am up front I get three luggage and I'm allowed three ice chests frozen or chill or whatever. I just argued these with CO mgmt in Guam as Honolulu Station had set their own rules and even a Red Coat was wrong on the rules.
So I would FOR SURE get this rule clarified and put in your PNR as contract employees and as I found out the RED COATS do not know the rules. Also the rules for CoMic land might be a little different but I doubt it. If you are in F you should get 3 at 70.
You are only allowed like 4 kg of dry ice and that is a waste of time. We never ship with dry ice out here. You can not ship with ice at all but our frozen drink mix has never been questioned at all. And works just like ice. We call it Ice Schemet (spelling is probably off) but it's coconut milk, sugar, and condensed milk and water.... good tasting and perfect ice cube if you want it. Again one gallon zip lock work GREAT. Just double wrap it up.
Questions???