Turn on the gas purge the air and start the refer on gas. Should be an auto feature select that and go. Yes dump the black tank when at least 3/4 full. I usually leave the gray open closing it on the last evening. I then use gray water to flush the hose after emptying the black tank.
Add some water to your black tank before using the throne. Helps keep things from drying out and sticking to your tank surfaces and sensors. When you get ready to head home and after dumping and rinsing your tank add some more water to allow some sloshing as you drive. This helps loosen anything you may have missed during the dumping/rinsing process. Do this last step only if you have somewhere to dump when you get home. I have pasture full of horse poop so I pull the valve as I drive through it. I too leave the gray open until the last evening. Two or three showers usually will fill my gray tank up the next morning.
2012 F-350 4x4 King Ranch Super Duty CC 6.7 Turbo Diesel 3.55 e-locker
2011 Palomino Puma 30KFBDS with Side Paw Kitchen and Bunkhouse
Equalizer E2 Hitch
Not if your outside panel for the fridge is in place. And there is no "pilot" the flame is ignited by 12 volt electronic igniter. We've taken 4 8-10 hour trips with the fridge running on propane and arrived with my beer still cold while I set up.
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2011 RAM 2500 HD 6.7L CTD Crew
2014 Sanibel 3250
Just be cautious when pulling in to gas stations and fueling the TV. It's advised you shut the fridge down before you pull to the pumps unless your fridge is way back on the trailer and it is well away from the pump islands.