Stolen Wedding Food

Boruch: Mazal tov, Shimon! I’m so thrilled that I was able share in your daughter’s wedding! The food, by the way, was fantastic.
Shimon: Thank you so much for coming; it means a lot to me! Here is my portable credit card machine. That will be $250!
Boruch: What?!
Shimon: It’s my minhag that all the participants pay for their own food at the wedding. This way, weddings are much more affordable for the parents.
Boruch: But you never told me that I was expected to pay. The standard custom in our circles is that the parents pay for the wedding, not the guests.
Shimon: In truth, you are right. What really happened was that the caterer had a medical emergency. I spent the day transporting food from the commissary to the wedding hall. However, I accidentally took the wrong food. That food was not meant for my wedding. The caterer is now asking me to pay $250 per portion! I was expecting to pay only $70. So now, I am asking all the guests upon their departure to pay for the stolen food.