Surgery on the 17th! Any tips?

Hey all! My secret booty tunnel is being evicted on the 17th. I think they're basically planning on sticking in a probe, seeing where it comes out and cutting from point A to point B...but I guess I won't know until I wake up from surgery.

Does anyone have any tips/opinions on the before/after of surgery? Things you wish you did ahead of time? Things you wish you did after? Any particular things you did to be comfortable afterwards?