Pls currency exchange rates are constantly fluctuating. how might this affect the currency exchange plans of a traveler who plans to spend several thousand dollars as they travel over a period of two months? ( consumer ap not math ) pls

With currency exchange rates constantly fluctuating it might affect the currency exchange plans of a traveler who plans to spend several thousand dollars as they travel over a period of two months because the traveler may encounter situations where his dollars may not be enough to be exchanged at any decent amount of currency in the country where he/she is in. This poses a serious problem especially if he/she does not have lodging or food ready in that said country. 

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