if it is in a pump they do make Frio bags but they are very hard to use and your pump needs to be water proof and no cracks in the pump. but you can keep in in your pocket, change the set once a day.
if not in a pump just get a Fro bag sock in water for the time it says and go it will last days but I find just running water over it for even 3 minute in the morning help it stay cooler better.
never trust the small hotel fridges insulin frezzeing ruins in faster then it getting to hot. Insulin if fine in room tap fro any where from 28 days to 60