From the Flipline Studios Blog
This week we wanted to introduce you to a customer who will be making his debut in Papa’s Sushiria, Vincent!
Vincent is a traveling mailman who loves to stop by for a quick Sushi fix. He’s not only here to eat, Vincent’s here to help too!
When we introduced stickers in Papa’s Bakeria, we made several quests where you had to serve a specific customer specific things. Unfortunately, this could sometimes take a very very long time. See, if you had to serve Rico a specific Special, you would have no idea how long it would take before Rico returned. Sometimes you would be waiting months before Rico would stop by the shop again.
So we solved that problem by creating Customer Coupons that you can buy in the shop.
Once you purchase a Customer Coupon, you can send it to anyone of your unlocked customers.
Once sent, Vincent will head over to that customer’s home to deliver the coupon.
After that, you will be certain to see that customer return by the next day!
Vincent will also be taking over the job of delivering new outfits to customers! 
How it works
You can buy customer coupons from the upgrades section of the shop for $25. You are allowed to have more than one on hand, but you can only deliver one per day. To deliver a coupon, go to a customer's profile and click on the mail icon on the top right. It will show Vincent delivering the coupon to the customer outside their home. You cannot deliver coupons to the closers.