Review for Rolling Hills Casino Review For Northfield Park Racetrack Google User Apr 11 '18 at 19:18 All slots casino (no table games) with free parking. Live horse racing also available next door during the warmer months of the year. This casino also has its own gas station and car wash with discounts at the pump offered with use of your casino rewards card. NEWS FLASH ** Northfield Rocksino has been purchased by the MGM Grand group. Starting sometime in the middle of 2019 the MGM Grand name should be present. View full site to comment or like