Nan Yang Dao's reviews consistently praise authentic Malaysian flavors, generous portions, and friendly service, with staff like Eric frequently highlighted. The outlets are busy and queues common, while service speed varies and occasional stock or hygiene issues are noted. Dishes such as nasi lemak, Penang fried kuay teow, curry noodles, and egg tarts are favorites, but some visits report slow service or inconsistent quality. Overall, it is seen as a value-for-money Malaysian comfort option that draws repeat customers.