This is a really cool event, especially if you like Greek food and fun. As stated in the title, this event has been going on for 61 years, and it is just simply a great time with a lot of people and a lot of fun. It is a great event to just be social and have fun. There will be a LOT of people there. Parking can be a real challenge in this area, so carpooling is a good idea. For a better idea of everything that is going on with this festival, check out their web site http://www.goholytrinity.org/cGreekFest.html
The event runs until 10, so there is still time to do other things as well. The last two years that I've went to this, the Greek Festival was the start of a long evening of fun.