You might think "I'll be able to meet that deadline because my hotel has WiFi," but any seasoned traveller can relate to WiFi issues. Let's say you check into a hostel on a Friday night that had the perk listed, only to find out that the internet is down, and a technician won't be coming until Monday. Or maybe the WiFi is up and running, but it's satellite-based and you can barely get an email to send. My advice? Always prepare yourself for poor connection, and have everything in place to be off the grid for a few days.