According to Chuangwen's experience, McDonald's monthly breakfast card is 16 yuan/month, valid for 30 days from the date of purchase. The monthly card can only be used once a day. You can only buy one at a time. An account can buy up to 5 cards. If you have five cards, you can buy breakfast at a 40% discount five times a day. In other words, McDonald's breakfast card can only be used once a day, and each store can only use it once, and it cannot be reused. If other stores have used it, other stores can't use it.

McDonald's breakfast card is a prepaid card, which can be used to buy breakfast in McDonald's restaurants.