As many now know the process of change in the 1960s was chaotic, altering different parts of the Mass and Office with no discernible pattern to the flux. The "1965 Missal" some like Fr Kocik of New Liturgical Movement and the blogger over at Southern Orders tout actually came about, more or less, with Inter Oecumenici in 1964. During my university days our library had a "1962 editio typica" printed in 1964 with all manner of alterations: vernacular at the strangest points, rubrics for combining orations, optional prayers before the altar, instructions for lay readers, the new Communion rite, and no Johannine prologue. Far from being the "Traditional Latin Mass" with some vernacular, the 1962 Missal 2.0 that was 1964 is very clunky and lacking in elegance. The changes were formalized with a new typical edition in 1965.
However it seems that the 1962 2.0 rite was celebrated very briefly with the same amount of vernacular as the 1965. Here is an old article from a paper called Catholic Northwest Progress detailing the vernacularization of the extant liturgy. The title given to the rites for receiving Holy Communion, "Eucharistic Banquet," hardly confirms the Reform of the Reform thesis that the change process did not need to go as far as it did. By this time many if not most clergy were celebrating versus populum and many had begun giving Communion in the hand. A few extreme elements concocted their own anaphoras and introduced female altar boys.
Most interesting to the Rad Trad is that permission to pray the Office in vernacular had to be obtained from the local bishop, but celebrations involving the laity imparted automatic permission. Ironically the easier standards for praying the Divine Office in vernacular coincided with a decline in the Office's popular celebration. In major cities most large churches would still pray Vespers on Sundays. In a few years nearly none would. The vernacularization meant no tones or melodies for singing the 1960/1964 Office and the Liturgia Horarum is almost entirely un-singable, with its large blocks of text meant to be read and its lack of antiphonal musics. Vernacular killed the Divine Office. Section II of the article linked above calls vernacular the "greatest possibility of scandal." There is nothing wrong with vernacular in the liturgy in the Rad Trad's opinion, but it was rare in the Roman tradition, disturbed many people, and was executed in the absolute worst way possible.