How to write the slogan "Let the guests pay the bill first" in the store?

Thank you, dear customers. Hello, please choose what you need and what you like, settle the money at the payment office, and then come to my place with the receipt to pick up the goods. Please pay on the left and then pick up the goods on the right, so as not to hurt the customer's heart. You should never say that you pay first and then pick up the goods. You should speak a little tactfully to make the customer feel comfortable.