I have seen people mention using dry ice in their coolers to save from having to keep buying expensive ice bags in the campgrounds. I have never used dry ice before, though, and would like to know how you use it. I found this site that mentions that dry ice will freeze everything and you can't use it with beer:
So do you use a second cooler of dry ice and regular ice to just keep extra ice frozen? Is there a way to use dry ice to just keep things cold rather than frozen? Are bags of ice really $10 in the campsites?