This isn't the most useful review in the world since the Greek Food Festival was last September, but I caught that Teri C recently reviewed it, so why not.
I used to live in the area back in 1999. I remember always seeing signs for the Greek Food Festival, but never made it out until last year. I like the fact that it's a smaller event with a cheaper entrance fee ($6). It doesn't have the same ride carnival atmosphere as San Gennaro, but I'm fine with that. I'm here for the food anyway. On that front, the GFF provides a good selection. I ended up having:
* Dolmathes Plate. Beef and rice rolled up in grape leaves. I could eat these all day.
* Spanakopitas. Filo dough stuffed with various ingredients.
* Ouzorita. Margarita made with Ouzo for that Greek twist. It was OK.
* Pistachio-topped Baklava. Delicious as expected.
* Bogatsa. Custard and cheese within layers of filo dough. Yummy without being too sweet (in contrast to Baklava).
Logistically, the festival is well run. Most people will park on the street, but fortunately the organizers have provided convenient shuttle buses that will take you from farther parking areas to the church. I like that the festival is hosted by the St. John the Baptist Greek Orthodox Church. It really gives it that local community vibe. There is also a large stage area where various musicians were performing. We went kind of early in the afternoon though. I'm guessing the entertainment really picks up closer to sunset.