I step off the bus from the Strip into the Las Vegas evening and walk inside the Palms Casino, about 40 minutes early for the poker game between Marcus Hellner and Petter Northug. I haven’t eaten since breakfast, and I’m just coming off a two or three mile walk in search a loaf of bread, jostling tourists in 100-degree heat. The only place I can find to make my peanut butter and jelly sandwich is...