Historical inaccuracies
Desi Arnaz tells the audience that the night's episode would be the final episode of The Lucy–Desi Comedy Hour, but the show was not given this title until it entered syndication; during its original run, it was known as The Lucille Ball-Desi Arnaz Show. In addition, due to tensions on the set, the final season was taped without a studio audience.
Harriett is a composite character based on several maids Lucille had over the years, and also takes the place of her cousin, Cleo Morgan.
In the first flashback scene, the establishing shot of Celoron Park, as well as the on-screen subtitle are both misspelled as "Celeron Park" and "Celeron, New York,1925" respectively.
Lucille suffers only one miscarriage instead of three.
Jess Oppenheimer is portrayed as being hired specifically to produce I Love Lucy, ignoring his involvement with My Favorite Husband beginning in 1948.
Grape is shown as being a Jell-O flavor, when at the time only six flavors - strawberry, raspberry, cherry, orange, lemon, and lime - existed in 1949.
The I Love Lucy set omits the Ricardo's bedroom and has the first scene from "Lucy Thinks Ricky Is Trying to Murder Her" be the kitchen scene with Ethel.
The second season Tropicana set is shown to be in use during production of the first season.
The Ricardos' wall is painted light blue instead of pale pink.
The "Pioneer Women" "13 cakes" conversation takes place in the living room set instead of the kitchen.
The Ricardos' second apartment is not used; the film shows the first one as lasting the entire series.
The revelation of Lucille's communist ties comes after the filming of season three's "Lucy is Envious", when in reality the news broke prior to the filming of the first episode that season, "The Girls Go Into Business".
Lucy & Desi discuss buying RKO in 1953 during the red scare, when it did not hit the market until around 1957.
The film shows Marc Daniels being the sole director, and Bob Carroll, Jr. and Madelyn Davis as the only writers. In reality, Daniels left after the first season, being replaced by William Asher, James Kern, and Jerry Thorpe. Bob Schiller and Bob Weiskopf joined the series in the fifth season, while Carroll, Jr. and Davis left after the first season of The Lucy-Desi Comedy Hour.
The Arnaz family is shown moving out of the ranch and onto Roxbury Drive in 1958, when actually they moved in 1954.
"Lucy Meets the Moustache" was not filmed before a live audience in reality. The filming also occurred on March 2, 1960, not in February.
The final scene of "Lucy Meets the Moustache" takes place in the Connecticut living room instead of Ernie Kovacs' hotel room.
The Connecticut house is shortened, omitting a portion of the wall between the fireplace and the front door, plus the kitchen door. There is also no door or balcony at the top of the stairs. In addition, the location of the other side door is changed in order to consolidate the set.
The depiction of Ball and Arnaz holding hands at the end of the film would be unlikely given the animosity between the two at the time. Ball and Arnaz rekindled a friendship in the years following their divorce and remarriages.
