So much changed with Vatican II, it’s hardly the same church any more as to customs. I liked the idea of fasting before communion, fish on Fridays, Stations of the Cross on Fridays, even hats on ladies at Mass or in church. I think back then you felt part of something apart from “the world” while still being in it.
Suring Lent you can have that fish on Fridays!
Actually I eat fish on all Fridays, unless it’s something I can’t avoid like a special dinner.