In here it definitely is. It is more expensive for same amount of food and you have to go to sushi bar to get it. When you go to restaurant, then you don't get sushi. It is not something canteen would give you, ever.
Also, the "Sushi AGAIN" complain can be entitlement only is Sushi is something special where you live. If sushi is ordinary food, then it is no more entitled then "chicken wings again" - perfectly normal thing to overhear if your local cafeteria is giving chicken wings every other day.