Hey lovely. The hospital will have warm blankets and heat packs if needed. Just take something to amuse yourself, music, crosswords, books etc.
You may not need much at all the day of. I had AC and then Taxol, No herceptin though.
Had no problems needing a spray bottle (apart from to spray my head for the cold cap) AC makes your pee red but that goes quickly and there is no pain. AC did not burn, no nose or eye problems. Your head is sensitive about day 10 to a couple of weeks after it. If you are using the scalp cooler that can last for a number of weeks. Taxol (this is the T in ACT) was a lot easier for me. Very few side effects. Everyone is different though. Can't help with the herceptin or hair falling out side effects sorry.
I would stock up on immodium (the dissolvable ones as they work quickly) and coloxyl for when it swings the other way. When you need to pee, go straight away, there is not much time delay.
Ask for the good anti nausea drugs (ondansetron) not the cheap crap they give you. Have a thermometer to check your temp and a bazillion mints and fruit tingles for the bad taste most people get from chemo.
You will be ok. There will be others with more info on the herceptin and hair loss. Awesome group of people on here.
All the best. Keep in touch.
xoxoxo