WVMM was hired to install two ceiling fans in our patio ceiling. Built into the back of the house, the patio has a hip roof with a wall board ceiling. There was a plated outlet in the center of the ceiling with switched power. The basic job was two install the two fans evenly spaced hitting the 1/3 spots in the ceiling using the already existing power.
After checking things out, they were off to the hardware store to get the appropriate hardware. Work started immediately upon return. As with all modifications to existing structures, you cannot know for sure what you will find until you open the walls. So not everything was as it appeared from checking out the clues on the visible ceiling.
One of the interesting problems: Behind one of the wall board seams where there should have been a stud there was a 24" gap of open attic, so the ceiling had to be opened to install a cross beam between rafters to provide a support mount for the fan.
There were a few other surprises that made one wonder how the house passed inspection when it was built 15 years ago.
In the end the fans worked fine, the work was quality, and the wallboard ceiling was repaired so you could not tell it had been opened. The pair doing the work knew the work required and were friendly and personable. Turns I had some background in common with one of them.
My only criticism would be that occasionally they were a bit disorganized, such as: making multiple trips to the truck to get the occasional tool or electrical part instead of having their tools set and hardware on a cart; or, getting partway though a task and having to back up because they realized they missed a step. Hence, I gave them only a good rating instead of excellent.