To meat or not to meat depends upon which Paschal Octave one is keeping. For the calendar of the 62 Missal, all the days of the Octave are equally 1st Class feast days. Meat meat be eaten. However, in the Paschal Octaves of earlier calendars, only Easter Monday and Tuesday are equal to Easter Sunday in liturgical weight. The remaing Octave days are less than Doubles of the First Class.Therefore, Easter Friday would be a day of abstienence since it is merely Semiduplex.