Last time I did something like this, the containers stayed frozen for several days, so I think there won't be a problem with them getting old. Even if they thaw by the last day or two, they are still kept at a cool temperature. There is a concern that I will get tired of these meals, but today I enjoyed them. The smoothie was wonderful, and the veggie pot was great too. I also had brought what was left from the fridge at home: some carrots, and tomatoes and bell peppers from the garden. So I also had some carrots, tomatoes and a bell pepper today. Once I finish off the smoothie and more of the carrots and tomatoes, I'll go to the grocery store and get some fruit and salad greens. But no need right now. This is an easy way to get my meals while I'm in a hotel. It helps that I travelled by car so I could bring the cooler and frozen food. I also made sure to get a hotel with a fridge and microwave. My travel companions had the free hotel breakfast (cereal and egg sandwich), hotdogs for lunch, and dinner will be leftover pizza, crackers and cookies. To each his own!