How often do the different Races inter-mingle with each other?

[Lauront]

Aye, agreed with all the above.

The treatment of the different races is kinda odd if there's supposed to be tension. XI handled racial tensions better. Non-Elvaan in San d'Oria? You'd be looked down on. Same with the Galka in Bastok - they were treated as nothing more than disposable labor forces. The Mithra and Tarutaru seemed to get along pretty well though. I always figured that Eorzea was a melting pot and that the differing races had gotten acclimated to each other.

And I just noticed that both games had a prevalent female human/elf hybrid.

They're a scourge. I'm bored to death of half-elves. And this is in a setting where they make a bit more sense than the majority of settings featuring them (usually with paper-thin lore rationale for it), given the possibility of many of the major races having a common origin. Still, the less I see of them, the better.