If the restaurant is willing to create a hive account...

They could easily make a post every time an order is ready. Such as:

• John your chicken dinner is ready. See the front desk to pick up order 145 to go. 😉

This saves money, paper, ink not needing to print as many receipts, and avoids the hassle wasted time collecting email or phone numbers from customers for electronic message receipts. Receipts on Hive remain as a permanent, authentic, official record, much better than forged paper, texts, and emails.

For each new order posted they can receive the payment in Hive as a gift tip, as well as rewards from happy customers and followers. Employees participating on Hive who upvote the posts will earn higher tips daily, so long as they stack some more every so often.

Customers can also comment back with feedback on the service and quality of food from their order, and the restaurant can award Hive, tokens, or coupons as appreciation for the feedback or for responding with answers to the customer survey.

Edit: Transferring Hive directly to the restaurant's Hive account is probably the safest. After all, we never know if competitors or boycotters of the restaurant might start a downvote campaign to negate rewards and visibility of their posts.