I had staples for my first c/sec. It was done on a Thursday afternoon and they were removed early on Sunday morning. With my second, I had a continuous suture.The c/sec was on a Friday night and the suture was removed in one pull on Thursday morning. Neither removal hurt for more than a moment. I found that I healed much better and faster the second time around. After the first, I had trouble with hypertrophic scarring and eventually had to see a dermatologist. (I don't think this was related to the use of staples.)
One of the moderators, Dachlostar, had glue and perhaps she'll pop in & tell you about her experience with that.