Reminds me of a woman I met in Florida who traveled the country for free by feigning interest in buying condos. But I also knew someone who tried that and ended buying a condo she didn't want.
With video poker there's always the risk the machine might be re-programmed.
One of the wealthiest people I personally know goes to Vegas every year, sometimes several times a year, because he's incredibly frugal and he gets a free vacation. He just has to give the casino enough action and he gets comped for the entire trip.