Our first rv/motorhome and so many questions!!

In an accident, the excess flow device will stop any leak, and even puncturing the tank will not cause an explosion. LPG refrigerators are designed for use while driving; there is no reason to not use them as designed. You have a much greater risk of fire from the fuel (gasoline) system on your MH than from the LPG system. In fact, you have a better chance of getting hit by lightning than you do of having a fire in your RV because of running the fridge on LPG while driving.