We brought a soft-sided collapsible cooler in one of our checked bags. It was big enough to hold a 1/2 gallon of milk, 1/2 gallon of juice, fruit, several yogurts, and a block of cheese. It worked great! Another option that some people choose is to buy cheap styrofoam coolers upon arrival in Orlando. Then they just leave them behind at the end of their stay. I've also read on these boards that your resort will put your groceries in a walk-in cooler, if necessary, until your room is ready. I can't personally vouch for that, though, since I've never needed to ask for that kind of service.