Altering the entities to which the State Racing Commission may issue a license and award racing days for racing at mile tracks; altering the definitions of "Prince George's County Blue Line Corridor" and "Prince George's County Blue Line Corridor facility" for purposes of expanding the location of the corridor and types of facilities that may be located in the corridor; altering certain requirements for the thoroughbred racetrack operator of and certain long-term agreements related to the Pimlico racing facility site; etc.