Only time I had anything stolen from me was at a NASCAR race. 2 cases of beer left outside during the race.
Upon letting it be known (loudly) fellow campers (race fans) almost immediately replaced beer with their beer...or as many as they could spare.
I took this at face value (they were dismayed that happened).Only because none of the "donated" beer was the brand I had.
Another place, a neighbors kid had his bicycle taken. Found later that day under a nearby camper. No one knew nothing...the campers didn't speak English (ha) the management tossed them out anyway.