When travelling, you just never know when you will need extra storage. Whether it is on a micro SD card or in the cloud. You can always store your important travel documents and images of your passport and credit cards. That way if anything happens, it won’t be such a hassle, reporting them missing and getting replacements. If you are travelling with your laptop, great. You can save some of your pictures in your laptop hadrdrive. However if you are not, you can use the hotel computer to back up your pictures into the SD card to make more room in your camera or phone.