But press a little harder, and there are signs the novelty is wearing thin, even for people like Lidija Ogorevc, one of the local guides who occasionally takes tourists on a tour of the town’s Melania-related sites for about $35 a head.

“Yes, that is the Melania wine,” Ms. Ogorevc sighed on a recent tour, as she breezed past a bottle of First Lady on sale at the town’s 12th-century castle.

“But this,” she added, pointing to a nearby bottle of Grajska Kri, a Blaufränkisch red, “this is the top wine.”

These days, Ms. Ogorevc does not hide her indifference to all the commotion over Melania. “For me, I really don’t really care about these things,” Ms. Ogorevc said, not seeming to mind how this might sound on a Melania tour. “Sevnica has much more to show than just this story.”