I wonder if the Disney website has nutritional info for their foods? You may want to inquire with them.
There are a variety of carrying cases that help keep insulin cool when you are out in the elements, I think Frio is the most popular for that:
http://www.medicool.com/diabetes/dia...avel_frio.html
Word of advice: Learn to carb-count. Yout state that you take only two injections a day, which, if that works for you, fabulous. But nowadays more aggressive therapies are being encouraged not only for better care, but for more freedom (eat when you want, and what you want, generally).
A question: What kind of insulin are you injecting two times a day, and are you Type 1 or Type 2?