There was when I lived in Thailand, and still is where I live now in Siem Reap, Cambodia. Having the Membership Card (which is optional) entitles me to free promotion offers/gifts. I have received free plastic sealable food boxes, packs of squash and drinking water in addition to my purchases. Such promotions are not available to "Makro" card-less customers. Here in Siem Reap, Makro occasionally offers sticker schemes (like Green Shield stamps) which enable you to fill/part fill a card for a selection of free items. The number of stamps you get is based on the total value of your purchased goods. In another scheme, we get free tickets for inclusion in a draw for a car, motorcycles, electrical equipment etc. These schemes are not available for non-card holders. You are advised at check-out. I already had a Thai Makro card when I applied for a Khmer one. The cards are only valid in the issuing country. All I had to show was personal identification and my still valid Thai driving license was accepted (I did not have my passport on me).