I was just reading the thread with the title "How to ask guest to pay for meal/drinks at dinner?" Among other things that the OP was called out for: acknowledging that not all of her guests might want to eat the food that she wanted to serve. I can't think of any subset of my friends that wouldn't have problems with any single meal that I wanted to serve.
In this day and age, I was wondering if there was any meal in America that a group of your friends would ALL be happy to eat. I ask this, because I think that breaking the same bread together is a powerful shared experience. Not having a separate children's menu. No separate entree that is gluten free and one that is vegetarian.
So imagine just 15 of your closest friends coming to a meal and eating at one long table with joy in their hearts. What single coherent meal and beverage could you possibly serve to all of them?