I probably have a key to your large outside storage compartment (most campers share the same storage compartment keys) and could unlock it, crawl in and then walk out your currently locked door with whatever I could carry out. Of course, I won't bother your stuff! Your neighbors who are there all of the time will be your best bet.
We camp in a seasonal campground. We didn't lock anything until we had a $4,000 golf cart stolen during the season during the week. So, the Weber is locked to the picnic table, the golf cart is locked to the deck, the sheds are locked and we lock the camper as well as all of the outside storage compartments.