What mistakes should I avoid with money, currency exchange, atms and cards?

Cash remains useful, while cards and mobile payments are common at larger businesses. Compare exchange rates, decline poor dynamic currency conversion and protect cards and PINs. Avoid relying on an old timetable, assuming every driver follows the same route, or committing money before understanding the terms. Keep screenshots, receipts and enough backup cash or data to change plans. Money note: Exchange rates, ATM fees and card surcharges change. Compare the net amount, decline poor dynamic currency conversion and keep transaction receipts.