That's a keeper, got to go and talk to those folks.
Trailer parks are a great place for perv-ing. By the time the kettles end up there they are on their 3rd or 4th owner, so there's no emotional attachments. And they are easy to spot because of the smaller lots.
But Michael might be right about the drug issue, sometimes the grill is the hiding place for drugs. So if they are squirrelly about the grill when you first ask, offer to come back later. Give them enough time to "clean" the grill.