I had sections both times. First time it was because baby was breech/transverse and wouldn't move, despite being fully baked they were teeny tiny. I BF and they quickly gained weight, they're strapping now.
Second time I wanted a VBAC, but there was issues with the traces they were getting, so said they felt more comfy if they did a section over say 30-60 minutes more monitoring, where HR would drop. May as well do it whilst the theatre is free, over say a crash section, when baby gets really pissed off.
My advice to you is don't have any expectations. I was getting period pains, so I asked female family, how do you know if you're in labour. I was totally dismissed. When I went in for the section I was in active labour and honestly had no idea at all. That was a section as the position was risky for cord prolapse, which can be bad.
Second time, I had a 38 week MW appt and said, you might think I'm crazy, but I've been having twinges and braxton hicks. The thing is last time I was in active labour and I didn't know, DH was working away so if you could have a quick feel, so he can be prepared. I was 4cm dilated. DH has to rush up 200 miles, literally whilst I'm trying to keep my legs crossed, not that it would stop baby. He arrived just in time to gown up for the section.
So both times I had period type pains, they were uncomfy but nothing that bad. I could have easily delivered at home if there were no issues. Both times my placenta was gritty and coming apart. But I'd had a really rough pregnancy experience both times.
You can read the magazines, they all say be your own advocate, have a birth plan of what you do/don't want. Realistically, you have no idea how you will feel until the big day. So in theory you could have very little pain depending on size of baby, all you need is gas and air for final transit. You could have another situation where labour is slow, in that situation you might opt fairly quickly for an epidural or mobile epidural. I was quite sick with the spinal, that was something you don't really read about.
Having a section doesn't make your experience any less valid. I never went to NCT classes, but I did have a NCT Mum ask me if I thought I'd failed DS by having a section. This was at a BF group when BF wasn't that popular. I replied the alternative would have been no baby, so yes I think I did the right thing. Thanks for your concern.
One thing to think about is when baby enters the world do you want them straight on your chest. Do you want to try and establish BF right away. Even if you don't succeed, I would say it's worth a go.