definately get granny knickers..
as dachlostar said, dont be afraid to ask for pain relief.
dont try and do too much straight away.
maybe pre cook meals and freeze before the big day, makes lunch and dinner time easier on you
i used a ring cushion for BF, it helped keep bubs elevated above my scar and less strain on me
loose fitting pants like elastic waisted trackies for home trip and i wore light, loose PJ's in hospital...

take care and best wishes