surgery tomorrow, afraid more of post op than surgery itself

You will do fine, it is normal to feel nervous.  I had my rny Aug 15 of last year, so I am a little over a year out.  I regret nothing and I do not know anyone *****grets having this surgery. Just follow the instructions from your centre and do not hesitate to ask for help when you need it.  Lots of support on this forum too, a terrific bunch of people.  If anything I regret not having surgery 10 years ago when they first told me I needed it.  Let us know how you are doing post op once you feel up to it, everything is going to be alright.