Anything considered weaponry, be it my renaissance faire sword or other stuff -- into the truck's strongbox if small enough, otherwise in the truck's backseat.
Chargers? They are in fairly non-obvious spots, so not worried about them.
Soft drinks, bottled water or beer? -- I leave it as fair game, even inviting the people to lighten the refrigerator of a few cold ones. I always assume that no matter how well stocked my refrigerator gets with booze, it will end up empty after taking it anywhere. In the Texas heat, it is very easy to get heat stroke or exhaustion, so I consider it important to keep at least bottled water on hand, just in case.
No, I leave the stuff that normally stays in the TT in between trips. My refrigerator always stays empty so no beer in there; any guns are removed after every trip and put in the safe at home. Tools, TV's, canned goods, dishes and linnens all stay.
X2, But, I also have an iventory of all the stuff of any value in the RV, (TV, tools, grill, sat dish,etc)and I give them a copy and I tell them I will be glad to go over everything with them if they want and that I will go over it when I pickup the unit.
I would remove everything and did the one and only time I took one into a dealer for service. Dealer lots are prime areas for thieves and the dealer is NOT responsible for your items if they use reasonable precautions to safeguard the unit. It seems to me like a half hour to clear the RV of items is far better than many hours and dollars of replacing everything.
Taking naps regularly prevents old age, especially napping while driving!
Reasonable precautions are in the eye of the beholder and the legal system, do they have secure facilities(gated, fenced, locked and security cameras) all fully functional .................the dealer is not resonsible is like the signs on the back of dump trucks that they are not responsible...they certainly are responsible for securing thier loads same as anyone else and the RV facilities are responsible for your TT and its contents.