Diabetes Travel Cases

My daughter, one year diagnosed type 1 diabetic, will be going on a class trip to Washington D.C.  So, of course, I have alot of questions.  We don't fly when travel.  But, we camp a lot.   We have coolers and refrigerator.  However, we will be flying and staying at a hotel.

I am researching travel cases and trying to decided the best one.  There are 3 that seem interesting.  The Medport Organizer,  The Deluxe Dia Pack Organizer and the Travel Pouch 2 Compartment from Diabetes and More.com.  Two of them use the traditional ice packs, the third uses a new type of dry ice.  The concern with the traditional ice packs is freezing them for the return trip.  The new dry ice packs are activated with warm water.

Has anyone used these?  Do you have additional recommendations?

Any help and advice would be greatly appreciated.