The Resorts, Hard Rock and Ocean casinos, along with the non-gambling Showboat Hotel, on the Boardwalk in Atlantic City, N.J., June 6, 2019. (AP File)ATLANTIC CITY - May was almost as bad a month for Atlantic City’s casinos as April was.With Atlantic City’s casinos shuttered and silent due to the coronavirus, the New Jersey Division of Gaming Enforcement said Friday that the casinos and two racetracks elsewhere in the state took in $91.1 million in May, a decrease of over 65% from May 2019.That put it just below April in terms of the all-time biggest year-over-year declines for gambling revenue in the state.