I carefully typed out my birth plan with DD, DH had a copy, there was a copy in my bag and we gave one to the midwife. I don't think anyone looked at it once! Top of the list was "I don't want an epidural or pethadine". Of course 8 hours in with no sleep in sight and only being 2cms, I welcomed the pethadine with open arms, not to mention the epidural 6 hours after that! A friend felt she had an awful birth because it didn't go according to her birth plan. She was in a terrible state for months.
Basically, in my experience, don't get too hung up on what you think you want. Once in labour everything changes, in fact the ONLY thing that actually happened that was on the plan was that the Doctor told us what DD was!
This time it will consist of:
Get me to hospital for appointed time
Hold my hand while section is being done
Phone parents
Bring food
As for having a bag packed - I haven't even begun to think about that - I've got 14 weeks to go, so loads of time - hmm, perhaps I had better put some thought into what I need to take!
Oh and Timmette is right - no dignity after a section, your er, leakage, is examined by all and sundry and no knickers in theatre!