Remember food!
I was in labour for 4 days and wanted a home birth (bought an indoor pool!) but things just took a turn and I ended up in hospital (I had a forceps delivery in the end in theatre).
I think we shouldn't put pressure on ourselves for the 'perfect' birth! Things will happen and our birthing plan will change but having a healthy baby is all that matters. If I was to do it all again I'd bring more food and force myself to eat it.... I didn't really eat in labour and then felt so tired for about a week... rest and eat is what I would do next time round to prepare myself better. You're going to need the energy for the delivery