Short answers, pulled from the story.
The limited edition collector's set of Last Order was released on the 14th of September 2005. Only 77,777 copies were produced in Japan and the set sold out months before its release.
The true protagonist of the Last Order anime film is the Turk leader Tseng. Tseng serves as the narrator and frames the entire story while exploring his internal conflict and moral ambiguity within the Shinra corporation.
Cloud Strife and Zack Fair were subjected to horrific experiments by Professor Hojo in the mako reactor. Cloud was injected with an immense amount of mako which caused him to succumb to mako poisoning and become unconscious while Zack was later ambushed by the Shinra military.
The Last Order anime film was directed by Morio Asaka and produced by Madhouse. The production took six months to complete and involved a team of dedicated animators and artists working day and night.
The Last Order soundtrack was released in Japan on the 19th of December 2007. The soundtrack was combined with the music from Before Crisis on a single album and later made available in North America by Square Enix.
Last Order was included in the North American Limited Edition Collector's Set of Advent Children on the 20th of February 2007. The film was not included in the 2009 director's cut of Advent Children.