It is distressing to see so-called traditional Catholics (re: supposedly orthodox, "true/real/old fashioned," Bible-believing Catholics) discuss Creation as though it cost God an effort to create the world. This isn't Howdy Doody we are dealing with! It's God Almighty! He could have created it all in a nano second - had it all up and running all at once - animals on the earth, Adam and Eve, sun circling, etc., and it would have cost Him no effort, not a grunt or a heave-ho. He didn't even need the time that He did take - He could have created all at once.
Instead He created with wisdom, with thought, with deliberation - in sections - to establish the hours, the days, the morning, the night, the seasons. To establish ORDER for us, and the rhythm of the world and seasons. To establish the WEEK. Where do we think the week comes from? God laid it all out for us. He "set us up" - and that He would need millions or billions of years, or "long" 7 days that aren't really 24 hours - is a blasphemy.
How can one pray, "I believe in God the Father Almighty, Creator of heaven and earth" - and not know that we are supposed to be telling Him that we believe in the Biblical 7 day creation of the Catholic Church, and as the Church has always taught it? He does not want to hear us tell of any other creation "type" of belief.
When the Sisters of St. Joseph taught us our catechism in the early 60's, it was a 7 day creation, just as laid out in the Bible. We all understood that. And had no problem with it. It was our delight.
"Unless ye become as little children...".