My suggestion is to get a better cooler. I have a Yeti I bought years ago, but if I needed a great cooler now, I'd look at one of the many knock offs. Ice only lasting 6 hours in unacceptable to me. I pre-cool the Yeti. This step is critical. I put a frozen 2 liter soda bottle in the night before heading out. Then 3-4 more frozen 2 liter bottles when packing the food. Make sure the meat is frozen hard. I still have ice in the 2 liters in 5 days. If you had a small yeti-type cooler, pre-cooled, with maybe 2 frozen 2 liters, or a frozen gallon jug, then fill up the rest of the cooler with ice cubes, you will have plenty of ice for an iced coffee for the drive home.