GRAB Malaysia Promo Code for Hari Raya. Please use the promo code to enjoy discount rate. HARIRAYA Hari Raya is just around the corner and to ease your planning to do last minute shopping, doing groceries, apply the above Grab Promotion code and enjoy RM6.00 Off x 3 rides. Promo is valid on 7 – 14 June 2018 (from 8.00 am – 11.59pm) and limited to 5,000 redemptions/day. Only applicable with GrabPay (Credit/Debit Card) and applies to Penang, Johor Bahru, Kota Kinabalu, Malacca and Kuching.