Another who would decide at the time.
I had pethidine, gas and air, tens, paracetomol, and begged for an epidural but didn't get one with my first. Had no idea what it was going to be like, so decided at the time what I wanted.
2nd birth, I decided when I was pregnant that I wanted an epidural, and even went as far as seeing the anaesthetist whilst pregnant to make sure I would definitely get an epidural once I went into labour.
I ended up having absolutely no pain relief, even though I begged for an epidural. There just wasn't enough time and I made choices at the time not to have pethidine, gas and air, paracetomol even though they were offered.
I don't think you can predict how you will feel, so you can't possibly know, especially if it's your first baby, what pain relief, if any, you will need and when.