My 2 boys (ages 6 & 9) love sushi, though not wasabi. They tend to go for the raw fish from the conveyor. Can get quite expensive though as bill generally comes to about £60 (and that's including the NUS discount). We also get the £40 take away platter every now and again which is quite good value.
Actually my daughter asked to go here for her birthday lunch last year but I used my defense discount to get 25% off total bill which works out better!
Many a time have my kids pestered me for a special treat of raw fish and wasabi.
The ASA needs to get involved on this. 'Kids eat free', I would expect my kid to be able to eat from the conveyor belt not from some unknown kids menu. Misleading much?