The entire experience, positive or negative, can be erased based on how you take care of the guest in their final moments.

How about selling the next visit with a free dessert.
It doesn't need to be anything extravagant, and it's more about the packaging.
Make it something that is easily taken out.
Make it something that your branding is on the packaging.
Include a manager's card and have it delivered by the manager at the end of the visit as a thank you for that guest coming in and inviting them to return.
Make it something unique and memorable.

Macaroons, mini-donuts, a bag of popcorn, house-made candy....the options are endless.

How are you creating a memorable experience and selling the next visit?