God in ancient times never joke with the sabbath, as a matter of fact, in the law of Moses sabbath day was a 'very' sacred day that all in Isreal (living there or those who came for a business, not neccessarily a native) must of need keep the sabbath.
The advent of new testament, also emphasize the fact and the need for sabbath, but not as bogus as once focussed by the old testament, what about our own world, the sabbath actually is for enjoyment.
That actually does not reduce the importance of sabbath, actually, it gives us a glimpse of what CHRISTAINITY is and will be.
Take it or leave it, the fact that all does everything that pleases them now on "sundays" only show that people no longer value the coming of JESUS, actually by checking the book of hebrews, all we come to terms with me that the sabbath is just to prepare and to usher us into the final rest of God.
So I beleive that not all, just like in the days of Noah will enter into the real SABBATH which is GOD's ultimate goal for all, as we mark our own sundays (formally called sabbath)? Are we indeed expecting and longing for that ULTIMATE SABBATH? Happy sunday.