Blue Fin struck me as one of many acceptable, but pretty much mediocre AYCE sushi establishments in Las Vegas. There are many of these and they are okay to go to if you happen to be in the neighborhood and are in the mood for stuffing yourself silly full of not GREAT, but still tasty fish bits.
But if we are talking about trying to find exceptional Japanese food experiences, then this isn't really the place for it. Subpar miso soup. Strange fluorescent green seaweed salad. Fish with not the freshest feeling texture. And fairly average sushi preparation.
I've given them a try, but am now going to go back to some of the other better Japanese restaurants of which there are a few nearby.