With the summer holiday season upon us, this is your guide to the dos and don’ts or spending money while abroad. Which? Senior Writer Grace Witherden & Jo Rhodes, a Senior Researcher at Which? Travel share their expert knowledge on the best cards to use, where to get your physical cash, and the best ways to avoid fees. Find out which travel debit cards and credit cards we recommend & sign up to our free weekly Money newsletter. Get 50% off a Which? membership.