From one who's experienced it both ways...
Yes, it is more difficult when it's not cooling. I had to throw away all my perishables by the time I realized I had no refrigeration and then use a cooler until I could have it repaired.
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TV: 2009 GMC Sierra 2500HD | Crew Cab | Std. Box | 4WD | Duramax/Allison
RV: 2000 Jayco Eagle 266 | FBS | TT -- 1986 Coleman Laramie pop-up -- Still in the family!!!