They aren't though. That's the point. English speakers are determined to force their language on everyone else. I've seen it abroad on many occasions. It is often painful to watch. Sometimes they even make fun of the person for speaking poor English.

You're also assuming the tourists themselves are all fluent in English, which is another issue. In some parts of Germany, many of their tourists are likely to speak French or Polish as a primary language, not to mention Mandarin etc from further afield.