Translation of correspondence in Spanish

One hour later people were starting to leave and we did not exactly understand why. We took another drink and I paid the bar man cash. Later it turned out that the change he gave me would be fake money.
But the fact that our driver took us there before showing us any of the attraction left quite an impression on us. He lost both of his parents in that war which explains why it was important to him.
I think I have to switch back to English. It will take me two years until I write an entire letter in German and I suppose I do not have the time for it. Does that mean that I am not serious about learning?