Well, miss one dilation it isn't a big deal, I have yet to meet anyone who kept exactly to the dilation schedule that their doctor gave them.
As far as electrolysis goes, I have only ever used one unit, but even on the lowest setting getting upper lip or even nose hair seems to be far more painful than say getting stung by a bee. However, on my legs or whatever, even on it's highest setting it isn't all that bad to me, it always hurts, but the pain is worlds apart on different places. Luckily if you really want to be able to deal with the pain, there are plenty of medications to help deal with pain.