Air traffic controllers in Paris are on strike, which delayed my flight from Portugal to Geneva by 3 hours. Get to Geneva, flight to Beijing has left so I change money to Swiss Francs and they book me a hotel for the night. Go to the hotel bar and upon trying to pay, bartender says in a thick french accent, “I am sorry my friend, this is France, we only accept the Euro”. 15 minute ride from the Swiss airport and I’m in a French hotel with a wallet full of Swiss Francs, Chinese RMB, Brazilian Reales, and American Dollars. Traveling…