Hi Karen .....
It sounds like you have thought through all of the essentials.
Being a Type A personality myself, I can relate. Some things we will never know until after surgery because each of us is unique in our post-op journey.
I had two AN surgeries and the post-op recovery was quite different between the two. Maybe obvious, but the first one was much rougher than the second.
Answers to your questions:
1. I never needed a special pillow and slept flat (on my side) as usual. I did find it uncomfortable to sleep on the surgery side for a couple of weeks post-op but then no different.
2. Ask your doctor, but most will let you wash your hair as normal after the stitches/staples are out (most out in a week).
3. This is very individual but most people resume their pre-op activities eventually. You might feel very disoriented for quite a while after surgery and not want to ride a roller coaster or bike, but with time it should settle down. Most doctors do not want you to do strenuous activity or lift anything heavy for several weeks post-op.
4. I flew from LA to DC 13 days post-op with no difficulty in pressure. I was extremely tired because of weather-related delays but a day of total rest fixed that.
5. Interesting question that it will be good to get feedback from others. I do know that the bone-anchored hearing devices (Ponto from Oticon Medical and BAHA from Cochlear) have remote and/or smart phone accessories that I would think could be adapted for ear piece substitution, but I do not know for sure. Alas, if you are SSD (single side deaf), only one ear can hear so it would not be possible to have bilateral hearing again.
Best wishes and keep us up to date on how all of it goes.
Clarice