Go to your HBO On Demand channel, and at the bottom you should have three tabs, HBO, HBO HD and HBO 3D. Arrow over to HBO 3D. All that is required is a subscription to HBO, you do not need the 3D Tier. I'm not sure if all ares have HBO 3D OD or not, we've had it since October of last year.
Time Warner Cable – Signature Home Premium View w/Epix, Sports Pass, HD Pass, Spanish Tier, Cisco Explorer 8642HDC, Cisco Explorer 8742HDC Both Running ODN 7.3.0_29
DirecTV – Premier, HD Extra Pack, NFL ST Max, NHL CI, MLB EI, Whole House DVR, HR34-700 Running 0972, HR24-200 Running 0802