The key to paranoid consumption in casinos and hotels is the e-cig style vape pens. They're very inconspicuous and I've had many a craps session now where no one has batted an eye while I puffed on a vape pen every now and again. If you're spending money and being respectful, people in the hospitality and resort industry don't give a fuck.

edit: pro-mode paranoia for in-room consumption brings a smoke buddy, febreeze, and a generous tip for house keeping into play.