All the best for Monday @TaraJ As @Katie46 suggests - Do you have someone to go with you? It is just nice to have company. ;)
Hubby used to do Suduko puzzles to while away the time, or just nap .... Make sure you take all the anti nausea meds that the Onc nurses will give you (whether you think you need them or not) as it is easier to stop it before it starts, rather than trying to stop it after it has started xx
Drink plenty of water afterwards too, rest when you must (you may feel weary/fatigue after a few days for a few days .... just put yourself to bed xx) Eat whatever you feel like eating, smaller more frequent meals/snacks may suit you more than 3 meals a day.
take care xx