I bought one last fall on way up to Quetico, Just my wife and I but I drink lots of water. I have always been thirsty and craving cold water. We took a cooler with block ice and several water bottles.  After hanging the bag to drain into a 12qt ss pot, we would fill the bottles and put them in the cooler. This is the first time in15 or so trips that I had all the cold water I wanted. It sure beats the heck out of sitting around and squeezing bottles! We of course still took our filter bottles to use if needed when out on the water. It will go again in June. I would say this was probably the best camping purchase I have made.