Things to bring:
1. lotion - due to the weather or the cheap brand of soap in the hotel, our skin got so dry and even itchy.
2. chocolate drink sachet like Milo - you cannot find Milo in their groceries. In case you might not like their food, at least you can take something at night.
3. Umbrella or raincoat, thick jackets, etc - even if your tour guide says it's going to be a sunny day. We brought a carry-all bag, and put all these stuffs inside. and leave the bag in the bus if we don't need them.
4. sunblock and chapstick