very hospital is different but some people don't realize that there sooo many different types of chemo, the kind that is usually administered with cc initial treatment is not usually an overnight type.
My chemo day was about 7 hrs. I would start out getting blood work and the lab would process it right away. I would then get an hour of hydration followed by the cisplatin which was an hour, then some potassium and 2 hours more of hydration. Then I would go and get my radiation after. In total it was about 6 hrs but if it was a busy day at the clinic the processing times would be longer.
Just ask and get some clarification.
Bring snacks and a phone charger and possibly a movie on a tablet or a book. In all honesty the day goes faster then you think. So many nice people to chat with, I actually enjoyed my chemo day as I dont very often get a day to sit around with my feet up and relax with the nice warm blankets they give you. Do bring a shall or loose fitting sweater as it does get cold especially your arm. I went to chemo alone every time as I didnt want to have to entertain or chat with anyone I could recline and have a nice nap.