I really think you'll be fine. I mean you survived the first one. I wasn't sure if they could put me under my first surgery. I have really bizarre reactions to different chemicals now and some my brain simply doesn't react to. I spent some time explaining everything to the anesthesiologist. I think they made sure to do it proper and put me down hard.
I would say the surgery getting the hardware out was about half as bad as the first. The first, ridiculous pain, oxy's don't do it for me really. When the nerve block wore off I was in straight hate you all fuck my life this suck fuck fuck fuck mode.  Just kind of rode it mostly.  Second one was like, meh, I feel shitty, It hurts, I feel shitty, wow that hurts, I'm nibbling on some french fries, I feel shitty.
A lot less I hate everything and everyone, a lot less fuck fuck fuck fuck fuck(not fucking just oh fuck).
That was me explaining this in a really shitty way. But maybe that will make sense to you.
The bones already healed, that's why they take the hardware out. When they put it in, you just broke the fuck out of your body, you have a bone that's now in 2 pieces or more. Your body doesn't like that. Then creepy people with masks that call them selves doctors, pump you full of drugs, cut open your skin, start moving around the bones and jiggling them to match up, start drilling holes here or there, and start screwing in random pieces of metal to you bone, then they sew up the skin and tell you to get the fuck out.
^ That's why it sucks so bad. Second creepy people with masks pump you full of drugs but they only cut open your skin, on bolt the hardware, and sew you back up. A lot less intense of a process for your body.
Good luck