Trick to keeping coolers cold? Buy a draw tight belt as seen in the (link) and loop around the entire cooler pulling the coolers lid down tight as possible. Do not open the cooler until you reach your destination. If you must replace the ice. Fill zip lock bags with ice. i.e. done to keep melted ice water contained.
https://www.homedepot.com/p/Classic-...1-00/203028359