I'll compare traveling with the refrigerator turned off to anyone who has or still goes really camping. For years, since I was a kid, while camping, our only refrigeration was a Coleman cooler and a block of ice. That cooler was in and out of the car and sat on the picnic table day and night. Also, 30-40 years ago food items weren't pasteurized and packaged as they are today and we certainly weren't experiencing food losses then! Furthermore, At my grandfather's cabin, many years ago, the refrigerator was the spring house! Anything perishable either sat in the spring water or above it on a shelf.
IMO folks today are "soft" compared to what previous generations endured and that to think no refrigeration for a few hours is detrimental to "whatever" are making a "mountain out of a molehill"...
FWIW, We travel with the fridge off unless it is a long travel day with very high temperatures.
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