What is different with responding this way to 'happy easter' and similarly to "are you going to enjoy that super bowl game today"? If one is an opportunity to witness to the truth, why is not the other? In the modern, may I be specific, Presbyterian church, it's as frequently going to happen as the other.
I didn't have any Happy Easters on the Sabbath. The Have a happy Easters before the Sabbath received a Have a good weekend. The Did y'all have a good Easters have received a We actually don't do Easter, but I had a good Lord's Day.