Before we leave I fuel up my truck.
I put my 'Slinky Box' in the bed of the truck.
I put my 6x6 jack stands in the bed of the truck.
I put more White Lithium on the Ball and inside the hitch.
I hook up. Check the safety chains, and electrical connections.
I check the air pressure in my truck, and on my camper.
I check inside the camper to make sure everything is where it should be.
I lock my camper, and all hatches.
When my wife is in the truck, I make sure none of the Cats are under the truck or my camper, then we pull out of my yard.
I pretty much do each of these things every time.