D is an imposition. An unwelcome guest that will not leave. It does not take a vacation. You, however, are the mom. You will win. If you ask what people do in a specific situation you will get tons of useful tips from people who have been dealing with D for a long time. Just remember on outdoorsy summertime kind of trips that insulin should not get hot, and it should not be allowed to get near freezing either in a cooler. It will lose its effectiveness. People swear by products by this company to keep the insulin at the right temperature using evaporative cooling http://frioinsulincoolingcase.com But I am sure there are a million (less expensive) other ways.