The laser hurts less than the waxing. The power is adjustable and they start with a low power setting. The lower the power the longer it takes. When she would try to turn it up a little too much I just told her it was too hot. The last 2 sessions with her....she had to look hard to find any stray hair. If a few show back up later they offer $25 touch up visits. So far none have returned.
As far as the pubes. It doesn't hurt anymore than the ears unless you down to the taint. Much more sensitive there. Each session is about 10 to 15 minutes long. Not a big deal really.