Been a while since anyone replied to this post but thought I'd chime in. I have read SO many posts on this and other sites that were very helpful in making me FEEL prepared however, as several have said, I learned that everyone's experience is highly individualized. I am going to begin journaling my case here in a new post in the near future as I hope to give back the same way other posters did for me.
As for balance though, let me share briefly my experience with this. I had a 3cm AN removed via translab approach 11/2017 - about 10 weeks ago. I had NO balance issues prior to surgery but had sudden hearing loss 5 years prior which led to discovery of a 3cm tumor (and something the MRI didn't show until surgery, a cystic mass attached that ended up being almost the size of a tennis ball). I am 42 years old, was very athletic all my life and until recently, played high intensity sports multiple times per week and ran regularly. After surgery, I was SO dizzy and my wife said while I was in ICU I was constantly calling for help because I was "falling" off the bed. The 5 days I was in the hospital got better each day and I walked out of the hospital on my own two feet. That's the positive part.
The negative part is that despite weekly vestibular therapy ever since, my balance improved but plateaued. I definitely cannot run or play sports right now. On good days I can walk unassisted and drive. On bad days I sit and watch the world spin and don't dare try to drive, have to shuffle slowly and look directly at the ground in front of me or I fall. There are still unresolved complications in my case and my doctors are doing all they can to help understand and resolve them.
My biggest point in this brief post for anyone reading is this: There are no typical cases. Read the experiences of others and just take them all in with the understanding that there is a WIDE spectrum and you could fall anywhere along that spectrum. In my opinion with hindsight, I made the mistake of correlating great health, a young age, athletic lifestyle and top quality medical care with perfect healing and no issues and that is not the case for me. Had I gone into this more skeptical and pessimistic, I'd be doing a lot better with all this emotionally, but because I went into the procedure expecting to bounce back quickly and like so many posters "have no balance issues after 2 weeks" and then didn't, I've slipped into depression and am now battling that. Your chances are the same as anyone's. You may bounce back from this and into a completely normal life or you may have to redefine what "normal life" means for you and reevaluate your lifestyle based on you physically can and can't do and try to be grateful the AN didn't kill you and that you made it through the surgery. At least that's what I'm trying to do.
Trust your doctors, trust your instincts, be prepared for anything. We'll all get through this. I very much hope to make another post in weeks/months, hopefully not years that I'm back to playing high level sports but today I was happy to make it up the stairs after walking to my mailbox.
To whomever is reading this, I wish you the very best for a speedy and uneventful recovery.