To add to this discussion, name days were the focus of celebrations historically also, because most the faithful were largely illiterate and birthday's were not necessarily recalled, but the church's commemoration would be the guide as to when an individual's name day was celebrated.
Also, I never read or heard anything from the Orthodox Church about relaxing fasting rules due to a church feast day or a day a saint is commemorated, except as noted by the church, such as the Feast Day of the Annunciation to the Theotokos. The Feast Day of St. George the Great Martyr is delayed if it occurs during the Great 40 Day Fast, to the day after Pascha, if I'm not mistaken. I've seen bishops of Roman Catholic dioceses "relax" fast rules for the day St. Patrick the Enlighter of Ireland is commemorated. In the RC diocese in which I reside, a previous bishop would routinely "relax" the fast rules on March 17th, but the current bishop announces routinely that fast rules should not be "relaxed" for this feast.