We have two. One is an old Coleman icebox that lives in our galley. The galley was actually designed to accommodate it, and the cubby around it is insulated. Some folks don't want to take up galley space with a cooler, but the icebox is our fridge, and we'd do it the same way again. We keep all non-drink stuff and milk in the icebox...dairy, meats, etc. Works like a charm.
The other is for drinks only, since we're in and out of that one most often. Usually keep it in a shady spot under our kitchen prep table. Keeping drinks separate allows us to have a smaller drink cooler instead of dumping everything into one big one. Much more manageable, and no more lugging around a giant, unorganized cooler.
Others' mileage may vary.
