Hi Lotty mac and welcome to this forum .....
We are not doctors on this forum, but we collectively have many different experiences that we willingly share to hopefully make the path easier for the next friends walking on it.
As we often say, there are no guarantees with any of this and each person is unique with a very personal health history and anatomy that can affect the outcome. Having an excellent (with many successful AN removals-experienced) surgeon greatly increases the odds for a problem-free, successful outcome.
All that being said, the post-op dizziness depends a great deal on how much your brain has already compensated for a damaged vestibular nerve, by switching over to your good vestibular nerve. If you have had little dizziness up to this point, you probably will have some significant adjusting to do. Walking, walking, walking is the best post-op remedy to speed up the adjustment process. Most people find by two weeks they have adjusted fairly well ..... some take much longer. The younger and more fit you are going in, the better.
Being SSD is an adjustment if you have good hearing, but it sounds like you probably have already adjusted to that so you may notice little difference there.
Eye issues occur if your facial nerve is disturbed during surgery. Translab approach gives the neurosurgeon the best look into the area. Hopefully your surgeon will be able to stay away from it so you will not have difficulties. If I were you, I would specifically ask my surgeon what he/she does if the tumor is wrapped around the facial nerve. Many doctors here in the US leave a piece of the tumor to save the nerve, because the remaining fragment will usually die from lack of blood supply. If it does not, or even as a precaution, radiation is sometimes given later to kill any possible regrowth.
Hope this is not too much information.
Many thoughts and prayers and ask any other questions you may have ..... none are too silly to ask.
Clarice