You're getting a damn fine pour. Lots of steel, looks like a solid 4" minimum. Color me jealous, I got the extreme opposite on mine, and was left with the decision to keep it and live with it, or hammer it out and pay again. I chose to live with it, and it hasn't been pain-free. Anyway, that looks like you're going have a very nice slab.
What were your problems?
The fiber that I have experience with is fine, long, and leaves "hair" on a broom finish. That stuff works. The fiber they mixed in here looks like rice, it's short, thick bundles of fibers, and I'm not convinced it does anything. I do think mesh would have helped against cracking. This was my recent experience, a cautionary tale. There was too much going on during my shop build that I didn't keep up with my own thread... Please message me with questions on my build, I don't want to hog up space in NCjeeper's project thread .So you think it cracked due to no mesh or rebar? I thought fiber was used in place of those things.
I have 7ft tall white metal panels that will go around the interior.@NCjeeper what are you doing to finish your interior walls?