As I have for many years I keep a few hundred euros and pounds in a home safe and take a few with me when I travel just in case although most European airports have ATMs nowadays so you can get them after you land. Same for many other countries and their currencies. Never had a problem.
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"No one is more hated than he who speaks the truth." Plato
“To argue with a person who has renounced the use of reason is like administering medicine to the dead.” Thomas Paine
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