I’m sure you’ll correct me wherein I error but doesn’t a church have to have someone to perform the Latin rites and have a choir to do the singing in a High Mass wedding?
What else is needed besides the hopeful couple?
From Wikipedia:
“Different levels of celebration”
“There are various forms of celebration of the Tridentine Mass:
Pontifical High Mass: celebrated by a bishop accompanied by an assisting priest, deacon, subdeacon, thurifer, acolytes and other ministers, under the guidance of a priest acting as Master of Ceremonies. Most often the specific parts assigned to deacon and subdeacon are performed by priests. The parts that are said aloud are all chanted, except that the Prayers at the Foot of the Altar, which before the reform of Pope Pius V were said in the sacristy, are said quietly by the bishop with the deacon and the subdeacon, while the choir sings the Introit. The main difference between a pontifical and an ordinary High Mass is that the bishop remains at his throne almost all the time until the offertory.
Solemn or High Mass (Latin: Missa solemnis): offered by a priest accompanied by a deacon and subdeacon and the other ministers mentioned above.
Missa Cantata (Latin for “sung mass”): celebrated by a priest without deacon and subdeacon, and thus a form of Low Mass, but with some parts (the three variable prayers, the Scripture readings, Preface, Pater Noster, and Ite Missa Est) sung by the priest, and other parts (Introit, Kyrie, Gloria, Gradual, Tract or Alleluia, Credo, Offertory Antiphon, Sanctus and Benedictus, Agnus Dei, and Communion Antiphon) sung by the choir. Also, incense may be used exactly as at a Solemn Mass with the exception of incensing the celebrant after the Gospel which is not done.
Low Mass: the priest sings no part of the Mass, though in some places a choir or the congregation sings, during the Mass, hymns not always directly related to the Mass.”
I'm not sure of all the details, but I can find an authoritative source if you would like.