When it comes to what type of card to use, either credit or debit, I was told when going to a 3rd World country to carry only the credit card. This is in case of a house invasion, robbery or held hostage while the bad guys drain your bank account.
The same goes for on line buying...credit card only, in case something goes wrong with the sale, or the site gets hacked. Here you are covered by credit card companies, and not so if using debit.
Was also at a fraud seminar wherein a police type, who was the main speaker suggested quite strongly only to carry your debit card only if you had a planned use for it that day. Otherwise leave it at home. I found this a rather interesting take on this type of card.
Q