Ahhhh, not good...not good at all:
1.) Weak storyline
2.) Many periods of uncomfortable silence
3.) Poor acting
4.) Many characters from the previous two movies are absent
5.) Cameo appearances from many characters we've grown to love...very little screen time for Lanie Kazan
6.) Tries to use the strength from the other movies as a support for this one...doesn't work.
7.) Most of the jokes fall flat...even the very funny Andrea Martin isn't very funny here.
8.) The delightful vibe from the previous movies is non-existant.
I wish they had stopped at Big Fat Greek Wedding 2. Love so many of these actors/actresses...this movie is a flop though.