Hey Stargazing, it isn't just about being lucky - a planned homebirth after a previous straightforward birth puts you in the lowest risk category anyway. But yes, the unexpected can always happen and thats why your midwife is trained to spot the unusual and advise you to transfer to hospital before it becomes a dire emergency.
I've had 3 caesareans, all classed as emergency but all very different. First one was really a failure to progress/doctor got bored waiting. It was the Sat night before Christmas and they had a party to go to, I kid you not! They told me the baby was in distress because there was old meconium streaking her waters when they broke them (trying to get labour going). I was wheeled down to theatre really fast and it was a GA because 15 years ago they didn't do spinals as much. It was frightening, even more so for my partner stood outside as no-one bothered to tell him what was going on in theatre for nearly an hour.
Second one, I was induced after a niggly pre-labour and after my waters had gone for more than 24 hours because that was their policy and I didn't know any better. Now I'd have told them I'd wait and gone home but I wasn't informed or assertive enough. Induction went through all the "cascade of intervention" through to failed ventouse and another caesarean where they thought they'd nicked my bladder and I was 4 hours on the operating theatre table. That doesn't happen a lot and it was remarkably calm really and I chatted and dozed through it. Again my DH was really upset by it as he got sent downstairs with the baby before they realised there were problems so he spent 3 hours not knowing what was happening with me and trying to console a screaming baby and fend off midwives wielding formula!
My third caesarean, I was told I had pre-eclampsia at 40 weeks, spent the night in hospital and then had a really calm and joyous caesarean the next day. It was as good as, for me, a caesarean birth could be but I always felt really sad that I hadn't given birth. But in terms of your question, it was calm, friendly, intimate, we had our own music playing, I breastfed in the recovery room, it was good.
And then 4 years ago, not intending to have any more we had a bit of an accident, and the moment I saw the blue line I was determined not to have another caesarean.I hired an independent midwife and had a home water birth which was fantastic :-)
Caesarean is not all doom and gloom, it does carry risks both to mum and to this baby and future babies and it does take longer to recover from but people who feel they've been involved in the decision and that it was the right one tend to feel much better about it.
Try not to worry, its good to have thought about unexpected outcomes but you are doing all the right things to try to avoid them. If you want more info there's a great book called "Caesarean Birth, Your Questions Answered" which you can get from NCT sales -www.nctsales.co.uk.