Some care was taken it seems to have the actress playing T'Vas make her seem like the Vulcans we are used to seeing, however the Andorian Unara comes across as just as human as everyone else.
Again, the Andorian woman's father was a Starfleet Captain. She was not raised on Andoria, but in Starfleet. And in Enterprise, at least, I felt the Andorians in spite of their appearances, did come across as more like humans than Vulcans. Anyway, the girl wasn't Vulcan but Romulan.
I live in NYC. Guess what? People raised here have parents and grandparents from every corner of this planet. (OK, some of us, like me, go back further than that, our grandparents were born here). The UN had nothing on the NYC population in terms of diversity. But one thing you will hear echoed from every group of NY-born kids... whether their parents came from the American west or south (black or white), Asia, Africa, the West Indies, South America, Micronesia, Australia, New Zealand, Europe, the Middle East... We are all New Yorkers. And we can spot each other when we are out of town, in spite of our outward absolute diversity. And by the way, we have manners, they are just different than those in Middle America.
I believe growing up in the diversity of Starfleet would have similar effects. Starfleet kids would be proud of their family background, but they'd be Starfleet first... and their behavior would be Starfleet.
The Romulan girl wasn't Starfleet, so she, appropriately, didn't 'act' Starfleet.
I am certainly not saying this show can't afford technical improvements. The sound quality of Part 2 was head and shoulders above Part 1. I also couldn't understand how the Gongdea, using weapons similar in quality to our weapons now, could destroy a group that could slip between dimensions. I suspect the 'ruins' aren't really ruins... well, I hope so.
But this was one fine fan film.