Expected readiness, paint readiness

Hi all, Looking for a bit of advice to help frame expectations in the following context: several hundred square feet of finished but old gypsum ceilings and walls were re-covered (gone over) with blue board and diamond finish type plaster (like unibond, usg, I dunno) by professionals. To highlight scale, it took a full day to hang and a full day to plaster. 1. How close to paint-ready should one expect the result to be? 2. How would you define "paint preparation" from there on? 3. Are the following defects expected: several feet of mesh tape partially showing to the touch (not just to the eye) in the ceiling-wall joint, a few 6 inch+ long ridges in the middle of flat surfaces, rough surfaces near triple corners (e.g. two walls and the floor). All these defects would be obvious once painted if left as-is. I'm trying to understand where the plasterer's work ends and where the painter takes over in a typical General Contractor-led environment.