Doors to each viewing area will open at 11 a.m. Reserved seats are available in the Event Center March 19 and March 20. Reserved seats are available in BetRivers Sportsbook from March 19 through March 22, March 27, March 28, April 3, and April 5. Throughout the duration of the men’s college basketball tournament, Rivers Casino Pittsburgh will host reserved-seating viewing parties in both BetRivers Sportsbook and The Event Center. PITTSBURGH - MaIt’s that time of year again-March Mania is back! Rivers Casino Pittsburgh has all the action-March Mania viewing parties for opening weekend of the NCAA men’s basketball tournament, new food and beverage menus, live DJs, and more. RIVERS CASINO PITTSBURGH ANNOUNCES 'MARCH MANIA' VIEWING PARTIES AND OTHER MARCH PROMOTIONS