Congratulations on opening this sucessfull fast food business. Here are some suggestions.
1: Quality standard should be better.
2: On the menu card, mention the amount of calories that a dish consumes, In the US it's a law for restaurants there. It's better for health
3: People suggest wi-fi too, But I say that there's no need of wi-fi because people use that for check-ins and that, and much of them spend time on facebook. So there's no need of Wi-Fi, even Gymkhana club in Lahore finished the wi-fi in every place because of un-social activity.
Whenever I'll ever come to ISB, I'll surely try this restaurant.