Aww I was exactly the same as you before my planned section, was so anxious about it all but it was very relaxed and the nurses and surgeons were fantastic.
I walked into the theatre and they put in the epidural - they numb the area on your back first - then they put up a screen to stop you seeing the op, they also put a catheter in but you don’t feel anything. Then hubby came in and they started. You’ll feel some tugging but it doesn’t hurt atall and you won’t care as you’ll be desperate to see baby. My little one was out in 5/10 mins and on my chest then they take about 30 mins to stitch you up and that time will fly as you’ll be so besotted with the baby. They will then hand the baby to your other half and he will meet you down in recovery.
I was in the recovery room for 30 mins or so and had some water and toast whilst having more skin on skin with baby then moved up to the ward after. I had my little one at 3pm and at about 3am I managed to get out of bed and change her nappy on my own - the nurse was there in case I did need her though and I also got them to remove the catheter. Then at about 7am I went for a wee - they will give you a cardboard bowl to wee into to check you can empty your bladder ok. I did feel a bit sick going to the loo but it was fine. At about 12pm I had a shower then went home at 2pm. They do enhanced recovery now for planned sections where they encourage you to get on your feet as soon as you feel able, but if you want to stay longer in the hospital you can. I was just desperate to get home.
I’d say you’ll need a button down nightie - I got a short sleeve black one from morhercare. I also took a dark coloured dressing gown, some slip on slippers so I didn’t have to bend down, some Boots maternity pads (the thicker ones), a phone charger, some food as you’ll get hungry in the night and your toiletries like toothbrush and paste, hair bobbles, deodorant, hairbrush). For baby you’ll need a few outfits and a hat, nappies, baby milk in case you don’t want to BF or struggle to BF (Aptamil do a starter kit with 6 easy made bottles and 6 sterilised teats, I found these so handy), a blanket, water wipes (my hospital said to bring a plastic bowl and cotton wool to clean the baby’s bottom but I used these wipes instead).
The best advice I can give is stay on top of your meds. Even if you think you feel ok that’s most likely the meds working. I stayed on top of them and set an alarm on my phone and so did hubby. Just don’t try to do too much either, I was loading the washing machine the next day and the midwife told me off as she said you might feel ok but you need to rest and recover.
Sorry for the essay lol hope it helps a bit.