I recently went back with my Aunt who was banded and she reaped the benefit of the things I wish I'd brought, but didn't have. I would suggest some liquid motrin and liquid tylenol. Both will help so much. I would have LOVED to have liquid lortab, but they don't give that to you at the OCC. The toradol (someone mentioned earlier) is nice, but it will only get you through the first day.
Also, I went back to work one week after and was sore. But, did fine. My aunt did really well and could have gone back the day after. So, I think it depends on the person. Good LUCK!