I think it’s religious? I didn’t have a chance to dig in at the time.

My primary concern was getting all the different vegetarians to identify what type they were. As an example one of them was lacto-vegetarian but was fine if eggs were in something (bread). I was laser focused on by feeding everyone with appropriate diets and allergy considerations.

Honestly thinking back I wish I’d had the time for more detail. We had someone with a lethal fish allergy and another with a crustacean allergy so never asked about sea food. Wonder if it was a religious and/or cultural thing to not eat pigs or cows.