When it comes to gaming in Nevada casinos, the revenue reports tell the same story over and over again: Visitors aren’t spending as much as they did before the recession and gaming has fallen second to food, shopping and shows. The number of slot machines and poker tables in the valley has steadily declined. Casino floors in Nevada lost about 38,000 slot machines between 2000 and 2012, according to data from UNLV’s Center for Gaming Research and the state Gaming Control Board. On the Strip, the number of slots dipped by more than 13,000 over that period, leveling out at…