Offers and Promotions Giant Singapore Senior and CHAS In-Store Discounts: 4% Off on Tuesdays for Seniors, 6% Off for CHAS Cardholders, Until 31 Dec 2026 Giant is offering seniors aged 60 and above 4% off every Tuesday, and CHAS Blue and Orange cardholders 6% off on selected days, at its stores until 31 December 2026. Nov 7, 2026