I am old enough to remember travelling to France in the 1970s when one was only allowed to take a certain amount of foreign currency abroad.
Which had nothing to do with the EU.
I'm old enough to remember when it was possible to travel to France without a passport, just a document one could get from a Post Office called a British Visitors' Passport.
You'd think that there was some kind of Iron Curtain between us and Europe, prior to freedom of movement, and no one could go anywhere, the way some people talk.
But do you know, children and students were able to go on exchange visits, language students did their year abroad, people were able to get summer jobs on the continent, some of us even travelled behind the actual Iron Curtain. That's all within my experience and that of family and friends.