It's fine...get some laborers to clean it up...vac all the dust, self-level it, feather the edges, sand, vac, mop....good to go. The worst prep...
If it were me...a good sand with a low-grit paper. Damp-mop, then hit it with acetone. Use a pressure sensitive glue. Will that be good for...
Recently went union 2 years ago after residential work. It's a whole new world, hoping to learn more. More importantly, hoping to some-day help...