Correct. The confusion, as noted elsewhere in this comment chain, lies in the fact that most conveyor belt sushi joints are not all you can eat, and the format of the restaurant that OP went to is rare.
And if I am a part of this comment chain, and I am confused (admittedly so, I should remind you), is there not confusion in the comment chain? :)
Boy, you should probably step outside and touch some grass or, I dunno, maybe let stuff like this bother you a bit less. Yikes.
Edit: And no, contary to your suggestion, I'm pretty comfortable not deleting my comments - I don't mind publicly making a mistake and then owning it. Thanks for the thought, though! :)