There are a handful of Hispanic/Spanish speakers who often show up at our Latin Mass (out of 20-25 total parishioners) I’ve never known if they are there due to missing earlier NO-Español Masses — ours is the last Mass of any kind during the day — or if their preference is actually the Latin Mass. They do follow the lay rubrics carefully. On the issue of clothing, these particular ones dress reverently, but once there was a lady with a low-cut blouse who insisted (before Mass started) on taking off her outer sweater to the consternation of her (more conservative) husband/boyfriend(?) They actually ended up having somewhat loud words outside the church building.
I have “The 2nd Amendment, America’s Original Homeland Security,” but it doesn’t correlate with any liturgical preference ;-).
Modest dress is just not a concept for many Latin Americans, even very decent, family-oriented people. Maybe it’s the warm climates where they originate.