Yes always to the Pope,faithful departed,and birthday celebrants.
No, Catholic weddings and funerals can not be held during the Easter Triduum. Both of these services include a Mass and no Masses are held in the Church from the end of the Holy Thursday Mass until the Easter Vigil Mass on Holy Saturday.
Roman Catholic AnswerThe Holy Triduum is the shortest season of the Catholic liturgical year. It begins on Holy Thursday with the evening Mass of the Lord's Supper and ends as dark begins on the Vigil of Easter with the beginning of the Easter Vigil Mass.
Holy Orders are celebrated by the Bishop, usually in his Cathedral, at an Ordination Mass.
Roman Catholic AnswerWhen it is replaced with the Asperges (sprinkling with Holy Water).
If a Catholic, without very good reason, misses a Sunday Mass or a Mass on a Holy Day of Obligation, it could be considered a serious sin.
.Catholic AnswerThe preface is the long prayer of praise and thanksgiving to God recited by the priest that begins the Eucharistic Prayer and ends with the people reciting the Holy, Holy, Holy.
3 is a holy number. (Holy Trinity)
Passover is a Jewish tradition, not Catholic. Catholics observe Holy Thursday, the Mass of the Last Supper.
Roman Catholic AnswerThe Introit, it's in the Graduale.
Roman Catholic AnswerEach Mass begins "In the name of the Father, and of the Son, and of the Holy Spirit".
Morning Prayer ( Liturgy of the Hours). There is no Mass on Holy Saturday, before the Easter Vigil.
If they are faithful to the Magisterium and the Catholic Faith, they go every Sunday and Holy Day of Obligation.