Maybe when you book into hospital talk to the Midwife. Might be worth getting them to take you through what will happen before the c-section, so that you are more relaxed on the day. You can still discuss with them and work out a birth plan. Don't be afraid to let them know that you have anxiety and depression as this allows them to give you the best care. They won't let you have anything before hand because it will sedate the baby. But I know what you mean, would be good to have something to settle the mind. As hard as it is to speak up, it will help you in the long run.
I will tell you what I remember of my last c-section. I arrived at the hospital at 7.30am and went up to Midwifery Floor. Was given a room to wait in. A Midwife was assigned to me. She went through the normal forms and questions. Did Obs, blood pressure and all that. Got me ready for theatre. Anesthatist came in and filled out his forms. Walked around to theatre with Midwife. Had an Epidural with this one. Put the heart monitor stickers on you and drip in hand. Then get you to sit on the edge of the trolly/bed thing and bend over as far as you can go (which is not far with a baby in your tummy lol), they then place the needles in one by one down your spine, now this sounds worse than what it is, they're fine needles, it stings a bit. What I did while they were doing this was hold onto my Midwifes hand and talk to her while distracting my self by wriggling my toes and concentrating on my breathing. Once you're numb they'll put the catheter in your urethra(yucko)for your wee. Then they take you into theatre, hook you upto the machines, put the sheet up so you cann't see what's doing on the other end. I don't know about you but I like knowing what they were doing, so the Midwife and Drs told me what they were doing. If you feel discomfort or Pain don't be scared to tell the staff. I did feel pain and once they got Neeve out they put me under. But I have a history of this happening to me, so it might never happen to you. I woke up out in the recovery room. They had these stockings things on me that were hooked up to a machine that sort of massaged the legs to get the circulation going and help the epidural wear of quicker. I went back to the ward, where Neeve was waiting for me. I did this with my mum this time, as my husband was held up in Sydney and couldn't make it back till 1pm the day of the c-section. Mum loved it and was such an awesome support. She got to cut Neeve's cord and everything.
I found that there was not that much difference between emergency and elective c-sections in what they did. But elective was way less stress. Not as exhausted after hours of labour. The staff aren't rushing around you. Everything seemed more relaxed.