Nia Vardalos' husband in real life at the time of filming, Ian Gomez was also in this film as Mike. They later divorced.

This sequel took over 13 years to be made and contains mostly all of the cast and crew from the first My Big Fat Greek Wedding (2002).

Filmed in Canada in Toronto's Greektown area.

Mana-Yiayia speaks English for the first time in this film. In the previous film, she only speaks in Greek.

Third film that John Corbett and Nia Vardalos have been in together.

Continuity

Ian's hair appears to be different lengths in out of sequence scenes, indicating either the original filming schedule or that some scenes required pickups.



Factual errors

Judging from the nearly overhead sunlight, the wedding is held during the afternoon, which is normal, but the high school prom is happening at the same time, which is odd. A prom in Chicago in the first half of May would typically start about the same time as sunset (7:30-8pm), so if the wedding started at the same time, it should not have been broad daylight when they exited the church.

At the beginning of the movie there is frost on the car and all the leaves are dead on the ground. This indicates it's mid-late fall/early winter when Paris is looking at colleges which is aligned with January deadlines most colleges have for the following fall. The movie skipped over winter to late spring.

Paris is shown applying to colleges a few weeks before graduating from high school, yet she is accepted to two schools who have application deadlines of January 1st. The type of school College Fair she is seen attending in April and May is intended for juniors, but she was a senior.

In the first movie, Toula and Ian marry when she is thirty two and her sister Athena is thirty five (three years older). The second movie is eighteen years later, which would make Toula fifty and Athena fifty three. Yet, repeatedly, their parents, Gus and Maria, are said to have married "fifty years ago".

Gus' car has a license plate that says OPA! It is not possible to have anything other than numbers or letters on a license plate.



Anachronisms

Gus is convinced that he is a descendant of Alexander the Great. However Alexander's only known child a son also named Alexander died when he was 14.



Character error

In Orthodox Church, is forbidden for a female to go behind the "Templo". This rule is called "Avaton". In the scene of the wedding, Maria goes there (when she doubts if she should continue the ceremony) and the rest of the girls of family follow her to change her mind. The priest should have made a reprimand to them. Also because they follow the ethics of Greek culture, this should be known to the characters without doubt.

When Greeks makes a toast, never say "OPA". They say "YIA MAS", meaning "Cheers" or, more literate, "have a good health". "OPA" is something Greeks say when they dance.