Deletion of Blue Cruise

Comment: Added citations to books, |, and copyedited for clarity, changing to the indefinite article "a blue cruise," to match the Dutch version. Discovered in the process of adding citations that this term appears to have literary origins which predate its use in the tourist industry. We could use |help from some Turkish speakers to |expand on its significance in literature
Stance: keep
Cited policy: Wikipedia:Reliable sources (WP:RS||WP:WORLDVIEW||WP:HASPOT)