my dd (3) needs an asthma medication that requires refrigeration. We had no problem with the "cooler" in the room on either cruise we've been on. One suggestion, if you're not happy with the temperature in the refrigerator, is to put some ice IN the refrigerator...it will drop the temperature, and the ice will stay ice longer in there than it might in a cooler you brought on. We brought a cooler with us, but found it unneccessary. I guess the refrigerators really vary from room to room.