When I was in Catholic school, we had our choice of tuna sandwiches or grilled cheese. I just LOVED the way they made their tuna salad, so it was always my choice.
Another thing about my Mom’s upbringing she told me about was people who lived in New Orleans NEVER thought going without meat on Fridays or during Lent was any big sacrifice. It was almost comical to some as they have amazing seafood there and anytime they could eat it was okay fine with them. When we visited, going out for seafood was a treat. Even now, in NC, we try to eat some kind of meatless dinner on Friday. My husband and I do not do it out of any religious observance but, because Mom lives with us and she tries to observe the fast, we go along with it. It is no big ordeal anyway and probably a healthy thing to do.