Hey,
I'm also having the same next week :). Tbh I'm totally not stressed about it, I'm happy to finally do it in fact. They told me I'll also get a tablet about 1/2 hrs before to relax me, then general anesthetic. As it's a simple procedure, the anesthetic will be the lightest general they give, so they told me I will just have a nice and refreshing sleep. They'll also keep me in overnight so they can give me painkillers should I need it. So it looks quite cool.
My only worry is that it will hurt more afterwards then it does now. The doc told me it might hurt or it might not. Also, I will get a week off work. Then, about 4-6 weeks later we will check if it's healing and if not, go for the LIS.
So again, I wouldn't worry about the actual surgery so much, it's a half an hour thing and you sleep through it
ps: I was also given the option of a spinal, instead of the general, but the anesthesist actually advised me to go for the general, because that way I won't have any psychological stress and physically won't feel a thing