1) You can sit on the floor. 2) Try the fire rice (it's tuna) 3) Happy hour starts at 5:30 - very reasonable! 4) it's informal, good for after-beach or hangovers.
Returned for some great sushi at a great price but don't come with an expired Groupon. You can use it for the "value" but its not stated how and they will not honor it for the monetary value.