So here's my idea:
If anyone receives a pizza from one of the Neapolitan pizza restaurant's competitors, and the consumer thinks it is of poor quality, then the consumer can bring the poor quality pizza to the Neapolitan restaurant and exchange it for any pizza of their choosing, as long as they purchase a beverage.
Additional info about the Neapolitan pizza restaurant:
The pizzas only come in two sizes: 9" and 5"
Average cost per pizza: $3.00
Average consumer purchase price for pizza: $12
Soda purchase price: $1.95
Also, the Neapolitan restaurant has a large wine and beer selection.
I am open to any suggestions or opinions, especially those that involve legality and potential problems. Thanks for your comments!