There are so many variables - you just never know what might happen! We did the Lamaze classes; with our first, spent 18 hrs in labour then an epidural then a few hours later an c-section - under epidural - DH got to stay in the OR, first to hold our new baby boy. Next two were also long labours, epidurals and 'VBAC' (vaginal birth after cesearian) - with both of my girls, we were almost at the decision point to have to go cesearian again, they finally turned at the last minute and out they came!
Both the births for the girls - only one side 'took' - really bizarre having relief only on one side!
The best advice I'd offer - do your research, know what the options are, be prepared for anything!