You are in abstract correct; but the "-SA" in the license that the parent post mentioned stands for "share-alike"; the same thing as "copyleft". Wikitravel can

You are in abstract correct; but the "-SA" in the license that the parent post mentioned stands for "share-alike"; the same thing as "copyleft". Wikitravel cannot forbid someone from copying other parts of the page without violating their license to the parent poster's content.