The answer is the townspeople
Chiron shows Percy around the beautiful camp. There's an arena, stables, a big outdoor eating area surrounded by huge columns overlooking the sea, a "fully stocked" forest, and more.
Everywhere, campers stop and stare at Percy.
Percy sees someone watching him from the attic of the farmhouse, but Chiron assures him that nothing lives up there.
Chiron takes Percy to the cabins where the campers live. There are twelve cabins arranged in a U-shape. Each cabin is associated with a particular god, and the campers who live in a cabin are related to that god. Cabins one, two, and three are empty. They are the cabins of Zeus, Hera, and Poseidon.
I think the answer is food
<em>The message or theme, of ¨The Ministers Black Veil¨ Is simple, everyone has a sin, it´s just hidden. Backup proof: </em><u><em>On its most straightforward reading, it seems that the central theme of “The Minister's Black Veil” is made explicit in Mr. Hooper's dying words: everyone has a secret sin that is hidden from all others.</em></u><em> thank you for your time!</em>
<em>~Esther</em>