In the Philippines, senior citizens are entitled to a 20% discount on food and non-alcoholic beverages under RA 9994. Most fast food chains participate in this program, but it's important to present your Senior Citizen ID or valid proof of age when ordering. Some establishments may have specific rules regarding the use of discounts during promotional offers, so it's best to check directly with the restaurant. For the latest policies and participating fast food outlets, you can visit the official websites or inquire at the locations directly.