We have a deep freezer in the basement and we always buy the 2 Litre size milk cartons for freezing the water in those. I can fit a few in there without any problem. They do a great job. As for dry ice, I never used it myself. I don't think I would. You'd need gloves to get drinks out. We have a fridge that we put all of our food in and a freezer. I love that. Ice cream and freezes for the kids. The cooler we bring is for all the drinks. From wine, beer to drink boxes and pop. We end up buying more ice while we are camping but the blocks last a long time.