Question: Which came first for Buzz Aldrin, the walk on the moon, or being portrayed in a movie?

Context paragraphs:
Mars to Stay: Mars to stay missions propose astronauts sent to Mars for the first time should intend to stay.  Unused emergency return vehicles would be recycled into settlement construction as soon as the habitability of Mars becomes evident to the initial pioneers.  Mars to Stay missions are advocated both to reduce cost and to ensure permanent settlement of Mars.  Among many notable Mars to Stay advocates, former Apollo astronaut Buzz Aldrin has been particularly outspoken, suggesting in numerous forums "Forget the Moon, Let’s Head to Mars!"  and, in June 2013, Aldrin promoted a manned mission "to homestead Mars and become a two-planet species."  In August 2015, Aldrin, in association with the Florida Institute of Technology, presented a "master plan", for NASA consideration, for astronauts, with a "tour of duty of ten years", to colonize Mars before the year 2040.  The Mars Underground, Mars Homestead Foundation, Mars One, and Mars Artists Community advocacy groups and business organizations have also adopted Mars to Stay policy initiatives.

Buzz Aldrin, hvor ble det av deg i alt mylderet?: Buzz Aldrin, What Happened To You in All The Confusion?  (Original title: "Buzz Aldrin, hvor ble det av deg i alt mylderet?")  is a novel by the Norwegian author Johan Harstad, published in 2005.  The book deals with a thirty-year-old gardener, Mattias, near obsessed with the thought of being second best, the greatest number two, much to his girlfriend's grievance.  He looks upon astronaut Buzz Aldrin, the second man on the Moon, as his role model, and tries to live up to what he thinks Aldrin would do in any given situation.  He has an extraordinary talent as a singer, but refuses to become a singer in his friend's semi-famous band, arguing that "not everyone wants to be a leader, some just want to be the secretary.  Not everyone wants to star in a movie, some just want to watch the movie."  After losing both his girlfriend and his job, he accidentally ends up on the Faroe Islands, where he meets people with the same ideals as himself, living in a psychiatric halfway house.  Using the lunar-like landscape of the Faroe Islands as a backdrop, the novel deals with their attempt at finding a balance between being second best and anonymous without going into total isolation.

Cliff Robertson: Clifford Parker Robertson III (September 9, 1923 – September 10, 2011) was an American actor with a film and television career that spanned half a century.  Robertson portrayed a young John F. Kennedy in the 1963 film "PT 109", and won the 1968 Academy Award for Best Actor for his role in the movie "Charly".  On television, he portrayed retired astronaut Buzz Aldrin in the 1976 adaptation of Aldrin's autobiographic "Return to Earth", played a fictional character based on Director of Central Intelligence Richard Helms in the 1977 miniseries "", and portrayed Henry Ford in the 1987 "Ford: The Man and the Machine".  His last well-known film appearances were in 2002 through 2007 as Uncle Ben in the "Spider-Man" film trilogy.

First on the Moon (1970 book): First on the Moon: A Voyage with Neil Armstrong, Michael Collins and Edwin E. Aldrin, Jr. (ISBN  ) is a book by the crew of the Apollo 11 Moon landing (Neil Armstrong, Michael Collins, Buzz Aldrin) in collaboration with Gene Farmer and Dora Jane Hamblin, first published in 1970.  It describes the events leading up to and during the Apollo 11 mission, the first manned landing on the Moon.  It was first published in June 1970 by Little, Brown and Company.

Apollo 11: Apollo 11 was the spaceflight that landed the first two humans on the Moon.  Mission commander Neil Armstrong and pilot Buzz Aldrin, both American, landed the lunar module "Eagle" on July 20, 1969, at 20:18 UTC.  Armstrong became the first to step onto the lunar surface six hours after landing on July 21 at 02:56:15 UTC; Aldrin joined him about 20 minutes later.  They spent about two and a quarter hours together outside the spacecraft, and collected 47.5 lb of lunar material to bring back to Earth.  Michael Collins piloted the command module "Columbia" alone in lunar orbit while they were on the Moon's surface.  Armstrong and Aldrin spent just under a day on the lunar surface before rejoining "Columbia" in lunar orbit.

Moon Landing (music drama): Moon Landing is a musical with book, lyrics and music by Stephen Edwards.  The story, from an original idea and synopsis by Justin Fleming, is based on the American Space Race and the Apollo 11 spaceflight which on July 20, 1969 landed the first humans on the Moon and is seen through the eyes of Buzz Aldrin, the second man to walk on the moon.

Man on the Moon (opera): Man on the Moon is a 2006 television opera in one act by Jonathan Dove with a libretto by Nicholas Wright.  It relates the story of the Apollo 11 moon landing on 20 July 1969 and the subsequent problems experienced by Buzz Aldrin, the second man to walk on the moon.

Buzz Aldrin: Buzz Aldrin (born Edwin Eugene Aldrin Jr.; January 20, 1930) is an American engineer and former astronaut.  As the Lunar Module Pilot on Apollo 11, he was one of the first two humans to land on the Moon, and the second person to walk on it.  He set foot on the Moon at 03:15:16 on July 21, 1969 (UTC), following mission commander Neil Armstrong.  He is a former U.S. Air Force officer with the Command Pilot rating.  He also went into orbit on the Gemini 12 mission, finally achieving the goals for EVA (space-walk work) that paved the way to the Moon and success for the Gemini program; he spent over five hours on EVA on that mission.

Return to Earth (film): Return to Earth is a 1976 American biopic TV movie that originally aired on May 14, 1976 on ABC.  The film stars Cliff Robertson as astronaut Buzz Aldrin and Shirley Knight as Joan Aldrin.  Based upon Aldrin's 1973 book of the same name, the film dramatizes the emotional difficulties of Aldrin's life following his trip to the moon on Apollo 11.  The film was directed by Jud Taylor, and Aldrin served as a consultant.

Apogee Books: Apogee Books is an imprint of Canadian publishing house Collector's Guide Publishing.  The Apogee imprint began with "Apollo 8 The NASA Mission Reports" in November 1998 at the request of astronaut Buzz Aldrin, second man on the moon.  The first publication by Apogee was printed to celebrate the 30th anniversary of the first manned flight around the moon.  A limited edition print run of this Apollo 8 book led to Aldrin suggesting that the imprint continue with further anniversary publications.

Supporting paragraphs: Return to Earth (film) Buzz Aldrin
Answer: July 21, 1969