In my Catholic household, back in the 60s and 70s, I recall that Good Friday and Ash Wednesday were "fast" days. Which meant one meatless meal. If you were able bodied, you were supposed to actually fast during the day (water was allowed) until dinner. "Meatless" at my house meant either fish sticks or mac'n'cheese. My mother wouldn't allow fresh fish in the house. Ever.
As for Easter dinner, no one liked ham or lamb, so we just had turkey. Our Thanksgiving, Christmas and Easter dinners were all the same.