TL:DR they are very very very slow and overpriced
I had an appointment at 2pm and I already had ombré hair (bleached) which had grown out for about 8 months. I wanted the banding which marked the new hair growth blended out and the bottom coloured. So basically, the end result would be an ombré balayage, but I already had the ombré part done. The stylist only trimmed it, bleached it once and dyed it once. The entire process took 6 hours. I didn't leave until about 8 pm. It was also overpriced at ~$320 before tip
I'm never going again.