In Cold Blood

From the text:

Ink-circled names populated the map. Cozumel, an island off the coast of Yucatan, where, so he had read in a men's magazine, you could "shed your clothes, put on a relaxed grin, live like a Rajah, and have all the women you want for $50-a-month!" From the same article he had memorized other appealing statements: "Cozumel is a hold-out against social, economic, and political pressure. No official pushes any private person around on this island," and "Every year flights of parrots come over from the mainland to lay their eggs."