I was at a local "quick change" franchise getting an annual inspection. Another customer car was pulled out of the shop after an oil change with engine running and the guy comes in and says to a coworker, the oil light is still on! I'd NEVER trust my vehicle to anyone for routine service I can...
I'll add one thing that I saw a mechanic doing (50+ years ago) when changing the oil in his personal car, and that was filling the filter with oil prior to installing. That way you don't have that temporary gap in oil pressure after an oil change. I've done that my entire life and that's why I'd...