I only have one credit card. If you ever had you CC company call you saying your card is canceled do to being hacked. It has happened to me three times in the last 10 years so don't think it won't happen.They will tell you a new one will be over nighted. It will not come for three days. You can travel but can't buy gas or food so when traveling I keep enough to last four or five days. Cash is always a handy item to help get out of a jam.