I had cisplatin once a week during radiation, they'd put in the line and draw blood, then while the test was running I'd go for rad, then do the chemo, which was a combo of several drugs, some for anti nausea, the Cisplatin, plus a LOT of saline to keep my kidneys flushed. Drink LOTS of water, they wanted me to pass about a liter the day of chemo. Lasted about 6-7 hours, I read, slept, ate hospital food ordered down from the cafeteria (which should have made me nauseous all on it's own) I didn't have nausea from the chemo, maybe a little sour stomach the day after, but nothing that would be considered major.

Second time around I had to stop after 4 treatments, started to affect my hearing. When I reported that to the oncologist he stopped treatments, figured I had enough anyway.

Everyone reacts differently, but go ahead and bring snacks, drinks, for sure a book. Just eat mild foods afterward, not so spicy and you should do fine.
Bob