Eligible UOB Mastercard card registration and offer activation is required prior to purchase by going to mtr.mastercardservices.com or www.priceless.com/travelrewards, registering card, and activating offer. Eligible transactions are limited to UOB Mastercard Travel Rewards participating cards issued outside of Thailand, and for transactions made in Thai Baht. This promotion cannot be used in conjunction with other promotions or coupons. Each card can only enjoy one cash back during the activity period. This promotion can be used at the following outlets: Central at CentralWorld, Central Chidlom, Central Chiangmai, Central Samui, Central Pattaya, Central Phuket, Central Patong, Central Hadyai. Not valid for non-participating items, in-store retailers, shop in Shopping Plaza, Beauty Gems, B2S, Super Sports, OfficeMate, Baan & Beyond, MUJI, Central Food Hall, Tops Superstore, Tops Daily, Tops Market, Power Buy, purchases of Gift Vouchers, Gift Cards, Gift Exchange products and Mark & Spencer food items.