I've been to another location of La Carnita, they follow the same kind of atmosphere with the same loud music. I still think the food is great, consistent quality between the two locations I have visited.
I ordered the carnita, short rib and their daily special which was a bass/fish taco. I love their carnita taco, very flavourful and a good balance of savoury and sweet. The short rib taco also had good flavour but not as good as the carnita. The fish taco was yummy and fresh. The fish was fried nicely, crispy batter and tender interior.
We experienced ok service. The waitress was here and there. The waitress explained there was a large party before us so our tacos came very late (~40mins). She apologized for the long wait and we received churros on the house!
Service isn't amazing and the dark atmosphere with loud music makes it hard to talk to your friends. It's about $5 a taco, and myself can eat about 3; I would say tacos are more on the expensive meal side. Even so, I'd come back because they have great tacos.