Klook offers great discount for Citibank card holders. Book your favourite activity and get flat 5% discount. Citibank Cardholders can enjoy savings up to a limit of 5 tickets per activity per destination. Promo code is valid for Citibank Cardholders from Australia, India, Indonesia, Malaysia, Philippines, Poland, Russia, Singapore, Thailand, UAE, Bahrain and Vietnam only. Offer is valid when you make your Payment with a Citibank credit & debit cards.