Disasters happen. It’s always good to have a backup in case you get robbed or lose a card. You don’t want to be stuck somewhere new without access to your funds. I once had a card duplicated and a freeze put on it. I couldn’t use it for the rest of my trip. I was very happy I had an extra and not like my friend, who didn’t and was forced to borrow money from me all the time!
Take an extra bank card and credit card with you