Banzai is a sister restaurant to Samurai Sushi on Cambie serving very large sushi.
Before I give more detailed feedback, I want to start with my creditentials as a sophisticated food dude that's eaten in real sushi-ya in Japan. Ya, I'm an expert - and I have very very high standards, so take this with a grain of salt. In a nutshell, this place is like the ultimate fish slaugther house!
1) Overall Rating
Banzai is like a fish slaugter house for their crude food quality, ok service, take-out style ambiance. Measured against an absolute in-Japan standard - it fails along with 98% of the sushi restaurants here. Measured against "average" in Vancouver, it's average. "It's not you, it's me" - I'm just not your target market. However, it has its place; afterall, the marketing offer (bulk product, low price, convenient place, and word-of-mouth promotion).
2) Food Rating
The fish butchers don't deserve to be called "taisho", which is sushi chef in Japanese. ALL of THEM must have worked in a meat slaugther house in their previous jobs and thought that using a chainsaw to cut meat was a tranferable skills to creating pretty sushi. I've never seen such rough, super-sized, untailored cuts of fish, poor wrapping of nori (seaweed), and gohan (rice) that was poorly prepared in taste, shape, and cohesion. The whole thing looked, tasted, and felt like a bulk wholesale warehouse offering. Perhaps I should have had a fork and knife to do my own sushi tailoring to upgrade it to professional class.
3) Service Rating
The service was ok. They were nice people.
4) Ambiance Rating
The place was all packed with people, and looked more like a take-out joint. The server took out a table and jammed it in between two other tables so close that we would've been, literally, sandwiched back-on-back with other people. I said, "kekko desu" (it means no thanks!). We opted to sit at the sushi bar, which is the proper way to eat in a sushi-ya, but we saw too much - please refer to my opinion in "food rating" above.