Firstly, if you want to use the coupon in the store, you can show the coupon to the staff, they will apply the discount by entering the code displayed on it. The discount will be deducted from the total amount after validating the code. So please remember show the coupon to the staff before completing your purchase to ensure the discount is applied correctly.

As for the online shopping, please remember that you should copy the code and paste it during checkout. You should enter into the payment page and find the coupon after adding the items to the cart. And then it will automatically show the price with the discount. In order to avoid any problems, please carefully check the code.

At the same time, some coupons are accepted by some roadside vendors, such as food trucks, mobile stands. So you should mention the coupon to the staff before purchasing, and then they will enter the code to their system by themselves.

In addition, some online retailers simplify the process by automatically applying the coupon code at checkout. In these cases, you won't need to enter the code manually, the system will recognize it and deduct the discount automatically, saving you time and hassle.

Please keep in mind that coupon codes often come with specific terms and conditions, such as expiration dates, minimum purchase requirements, or restrictions on certain products or categories. Always review the fine print to ensure you meet the criteria for using the coupon. This will help you avoid any surprises or disappointments at checkout.

Lastly, remember that coupon codes are usually tied to specific promotions and are non-transferable. They typically can't be combined with other discounts unless explicitly stated. Trying to use multiple coupons at once or sharing your code with others may result in it being invalidated. Use the coupon responsibly and as intended to make the most of your savings.