Hi Donna,
While I have not had a procedure with Dr. Alexander, I can say that overall the procedure is pretty painless. The worst part is the injections for the anesthesia. After that takes effect, there is really no pain. They will give you more if you feel anything. The problem with the initial injections is that there are many of them all over the donar and recipient area. But once that is over you're home free.
I actually drove 2 hours home from my procedure the next day. Knowing I was driving, I didn't take any pain medication that next morning. The pain was minimal.
As far as breaking up the long day - generally you are on valium, which helps make you more comfortable with the LONG day sitting in the chair. Even though the chair, which is somewhat like a recliner, is comfortable, it is still difficult to sit that long. The valium helps with this. You can watch movies. You take restroom breaks, You get lunch brought to you, etc.
Hope that helps.