It's great that you got your surgery booked, Summergal! And it's really great that you are getting all those tests. That means your surgeon is making sure that your resting tone is high enough for surgery (the manometry), which will make it less likely that you'll have problems with passing winding or leakage afterward. And the colonoscopy will make sure that there are no underlying conditions that could complicate your recovery. You probably already know all that! But I really like your surgeon for being so thorough and caring with you.
Try not to be too nervous about the surgery. It really isn't bad at all. My last butt surgery was a breeze and recovery hasn't been too bad either. I have had some pain - I won't lie, but it is nothing like fissure pain. I also found it easier to take psychologically because I could feel that I was healing and not just coping with pain. You will be so happy you had the surgery!
We will count down to the 29th!