- To qualify (“Qualified Cardmembers”):
You must be a person holding an OCBC Titanium Rewards Card who received an electronic direct
mail (EDM) or SMS from OCBC Bank, inviting you to participate in this Promotion.
- Earn 10 OCBC$ (“Bonus OCBC$”) for every dollar spent on dining transactions, up to S$500, on
your OCBC Titanium Rewards Card during the Promotion Period.
- For avoidance of doubt, dining transactions must be performed at dining establishments that fall
within any of the following Merchant Category Codes (MCC):
a. MCC 5812 (Restaurants and eating places)
b. MCC 5814 (Fast Food Restaurants); and
c. MCC 5811 (Caterers)
https://whatcard.sg has been updated 
Source: https://www.ocbc.com/assets/pdf/cards/t_c-titaniumrewards10xocbcdine.pdf