OrbisNonSufficit:
Take it this way, sometimes people change Rites. Why is that if they are all equal? Because subjectively, it can benefit individual to come to different Rite.
An individual never merely “changes Rites”. Individuals change canonical inscription to a Church. That means a new bishop, a new parish, a new pastor, a new congregation. The liturgy may be changed incidentally, but what is really changing is the people.
Most of all, it means changing how one observes fasts and feasts. A Roman Catholic fasts only 2 days a year - Ash Wednesday & Good Friday, and even then it’s only smaller meals with no meat.
By contrast, the Byzantine & Ukrainian Greek Catholic Churches traditionally fast 4 times a year - Great Fast & Holy Week (46.5 days), Apostles’ Fast (long or short depending on the date of Pascha), Dormition Fast (14 days) and St. Philip’s Fast (40 days) plus one day fasts on Nativity Eve (Dec. 24), Theophany Eve (Jan. 5), the Beheading of St. John the Baptist (Aug. 29) and the Exaltation of the Holy Cross (which is coming up tomorrow, Sept. 14). To top it all off, traditionally we abstain from meat on almost every Wednesday & Friday (except the Privileged Weeks).
Example: In the RC Church Jan. 6 is Epiphany/Three Kings which remembers the visit of the Magi to the Infant Jesus, and in some ethnic groups one gets extra presents. In the Byzantine and Ukrainian Greek Catholic Churches, Jan. 6 is Theophany - the baptism of Our Lord by St. John the Forerunner and the revelation of the Holy Trinity.
Also, it affects the way one receives the mysteries/sacraments. Traditionally, in the UGCC one fasts from midnight before receiving the Holy Eucharist but many observe the RC Eucharistic Fast which is
three hours from alcohol and other food and drink for one hour before Mass.
N.B. That 3 hour rule from alcohol is still in effect.
True story: When we had our last exam, my classmates and I went down to the bar to celebrate. I had white zinfandel 2x and one of my classmates bought me a shot of peach schnapps. I walked back to campus and realized it was
Ascension Thursday!!!

Oh no, I have to go to Mass!
I talked to Fr. H., our chaplain. He said I could not receive Holy Communion until 3 hours after my last drink. So I had to wait until the last Mass at 7 p.m. in order to go to Holy Communion.
So changing particular Churches or Rites is NOT to be taken lightly.
One of our late cantors was RC but his wife was Ukrainian Greek Catholic. He loved her and our Liturgy so much that he canonically switched to the UGCC. He was at every service except Nativity Eve, when his family had the traditional dinner of the seven fishes. Afaik, that was the only Italian tradition that he kept after his switch to the UGCC. (And being Italian, he had a
great singing voice.) Eternal memory!
P.S. All dates are Gregorian calendar. Julian calendar +13 days.