First I don't think I worry while asleep. We travel with the refer packed when we leave the driveway. We have lots of frozen meat to BBQ and some cooked like hamburger per cooked and frozen for what ever the wife or I decide is right for the next meal. The house refer is all but MT when we go as all goes in the RV refer. At home a day or three before travel we set the RV on the drive and load the last items at a slow pace, taking inventory of what staples will need to be added to those that just stay in the RV from previous outings. The refer is turned on from this time on set to auto. I think the odds of a propane problem are about the same as any accident, I fear the fuel on board more than the propane.
LEN