I've been to both the John st and College st locations now and both have been excellent! My only real complaint is that I couldn't get anyone on the phone even though I tried multiple times. Normally this wouldn't be a problem but since the second time I ate at La Carnita, I was making a reservation for myself and a friend with several severe allergies, it would have been nice to have been able to confirm that they could serve someone with numerous allergies rather than risk having to leave once we got there.
Luckily, they were able to accommodate the food restrictions and the waitress was really great about letting us know what the kitchen could do for us! We ordered one of each of the tacos and the food arrived fairly quickly and everything was delicious. Pricey but worth it. The atmosphere was great, the music was great and I will definitely be going back.
My experience at the John st location was quite a while ago but similar: great food and service but they had a live DJ and offered us some specials since they had recently opened.
Easy 4.5/5 for La Carnita.