Been visiting Yokos for at least the last 12-13 years. We started going when we were still in school as the food was plentiful, good and affordable. They were also the only restaurant I know that did individual bills for a party of 15 which as students we were very happy with.
They had and still have a very good selection of sizzlers to satisfy both meat-eaters and vegetarians.
The food has remained plentiful however the prices have increased over the years. I dont know how much money school kids receive nowadays but I am not sure if Yoko would still rank as affordable for them. For those who can and particularly for those who live nearby Yoko remains a staple and favourite choice.