Atlantic City’s efforts to recapture some of the tourism dollars it has lost to casino competition in recent years finally appear to be working. Nine years ago, the city’s casinos started realizing they needed to offer more than just gambling if they still wanted visitors. They doubled down on expensive investments like additional hotel towers, restaurants, swimming pools, spas, shopping, nightclubs and concert venues. Now, cash sales at non-gambling outlets within casinos represent 28.5 percent of revenue, up from 22.3 percent two years ago, and bars have increased their payrolls by nearly 39 percent in the past two years, according…