answer:If it freezes solid it won’t get back it’s fluffiness if you put it in the fridge for an hour when you get to where you are going? I don’t know much about ice cream, but I know when I Put frozen cool whip or ice cream in the fridge it softens. If it will change the consistency, I would bring a separate container with dry ice, and put not very much ice in the one with the ice cream. Check it after 30 minutes and if it gets too soft add some more dry ice from the other container. Or, I would use regular ice which won’t be as cold as the dry ice probably.