Okay, so you've probably heard about the modern torture devise that banks came up with a long time ago: we are talking about ATM fees, of course. We won't go into how angry those ATM fees make us (how dare they charge us for using our hard-earned money?!). But we will say that many banks boast an ATM-fee-less policy, meaning that you can go ahead and take out as much cash as you like at no cost.
This definitely comes in handy while traveling, given that you never know if the place you're visiting is a cash-oriented society that doesn't often accept credit cards as a valid form of payment.