Keeping your food cold outside is going to be easy when you have a decent cooler. The GoSun Chillest is an app smart solar cooler with 2 zones and adjustable temperature. It has 45L capacity with room for over 60 beer cans. It has built-in power for over 10 hours.
This solar cooler comes with wheels and a handle for easy movement. It has a temperature range of -4 to 68F. You can find out more about it here.