Here's my .05, due to inflation.
We have never and will never travel with the gas turned on(unless we forget).
At least the day before a trip, I turn the frig on to the coldest setting using AC.
Only put already cold items in. And only the things we might have to have.
We go to the local grocery when we arrive at the destination(unless it is in a remote area) and buy all that we will need. Cold items too. This saves a (little) on the weight and having to keep it cool.
I fill up the ice bucket before we leave and the ice is hardly melted when we arrive.
We don't open the door while we are in route and have gone 11 hours before and things are as cold as before.
If you have ever traveled in the south, especially south MS, you know it can get real hot.
Also, before we break camp and travel; I'll have the BOSS light the stove and I'll make sure the gas bottles are turned off.
These are just some things we do, and it works for us.
In other words, less chance of anything going