When I travel, I have the luxury of not having to take drastic measures. For my tournaments with Special Olympics, usually I am in a hotel room for Winter Games and in a refrigerator equipped dorm room for Summer Games because not only do my nebs have to be refrigerated, my insulin does too. When I go to my friends house for the weekend, I just use their fridge.
And barring a refrigerator in the dorm room, my coaches bring plenty of coolers plus I have my own diabetic cooler.