ANSWERS

What i your authority for saying that the introductory psalm, Contiteor, etc., at Mass " are primarily Intended for the celebrant and those about him at the foot of the altar ?"
Liturgical history shows that these prayers were personal and variable up
to the revision of Pope Pius V. At High Mass, which is the norm, they are now recited by the celebrant and ministers while be Introit is being sung. Canon Mahoney (Questions and Answers i, 115) notes appositely that " Dialogue Mass" is not a solemnisation of Low Mass but a preparation for full participation in 0 Song Mass.
Is it true that celebacy of the clergy Is not obligatory in Catholic Eastern rites?
Yes; in most of the riles marriatie is permitted before hut not after ordination. "Of 8,000 Eastern Catholic pas' (oral clergy about a half are loaded " (A tt water : Catholic Dictionary).