So I bought this nice insulated bag that I thought I'd bring to the parks to hold my son's sippy cups with milk and juice. I told DH that we would just put our ice pack in the freezer in it. Then it dawned on us. How to keep it cold while at WDW? We are staying at All Star Movies and we requested a fridge. So we can put it in the fridge but it won't stay cold. What do you think ?