Flowers: Yes, henceforth unless otherwise stated
Organ: Yes, henceforth unless otherwise stated
After Terce, Sequence, double Alleluia at dismissal.
Preface: Easter (in hoc potissimum die)
Proper Communicantes/Hanc Igitur: Easter
Matins: Proper Format of the Office for the Octave until None on Easter Saturday inclusive
Vespers: Second Vespers of the feast