Foods
Fish is allowed, since Independence Day falls on Annuciation Day, which is a Feast Day in the Church calendar. Other foods allowed are fruit, cheese, nuts, alcohol, beans, olives, and all vegetables.
Glorifying Mother of God
The religious meaning of the holiday is a coming together to glorify the Theotokos(mother of god).But in general and in effect the day is considered a holiday because it's the day after Christmas just like Boxing Day in some Commonwealth countries. Boxing Day is a holiday traditionally celebrated the day following Christmas Day, when servants and tradespeople would receive gifts, known as a "Christmas box", from their bosses or employers. This symbol is The Divnogorsk-Sicilian Icon. Base on the Greek Orthodox Church this is the mother of god and saints all around her. The saints around her are worshiping her. This symbol was created in 1831.