Yes Giant, Careefour, Courst, Tesco, JJ and anywhere that accept AMEX anywhere on earth  And you get 5X TP too. You should read my review Maybankard 2 Card review and benefits . In my blog I even did a comparison versus Citibank Cash Back Plat. The Maybankard 2 AMEX 5X TP is much much better than Citibank Cash Back 0.3% for general transactions. Noted you mentioned you have the Citibank CAsh Back at MBB 2 Thread.

http://forum.lowyat.net/topic/2035710

Also ask them if you qualify for the RM100 bonus I mentioned above