No one have any obligation on RLC, is called "reallife" right because they are not forced on any "show" as in other pathetic websites/tv series.
But is not a matter of "contracts".. is just that, since people pays, hiding on private rooms or under blankets, or whatever, is disrespectful.
That's all... and that's why no one on RLC staff will force them to act differently, or will refund anyone. I think they only way of "agreement" they have is something like "guys, if people watch you is ok, if no one cares of your apartment, we must close it". Nothing more.