If we are out camping with the Jeep we carry a large cooler with a 5-day rating and a smaller cooler. The larger one has most of the spoil-able bulk food - meat, cheeses, eggs etc, and the smaller cooler is used for daily travel foods - lunches when exploring, water bottles etc.
And then there is my sainted beer cooler :tinysmile_fatgrin_t
Becuase we are usually so remote with no access to supplies, I find it beneficial to have a couple of coolers.