From: Greenwire
“Jeff Ruch, executive director of Public Employees for Environmental Responsibility, said relying on leases for more revenue puts the Park Service on "sort of a slippery slope." "These kind of business arrangements are not their forte — otherwise, they'd be in business," he said. And he said that having parks look to tenants for income could increase commercial pressures: "Parks would start to resemble Disneyland: They'd have tiki bars and amusement rides and whatever would help pay the rent."