Across many visits, Riverside Grilled Fish outlets receive largely positive remarks about fresh fish, flavorful sauces, and generous portions, with good value at promos. Customers praise attentive service from staff such as Darren, Shi Tin, Janice, and Boey, and the engaging ceiling screen ambience. However, recurring frustrations include slow service, long waits, uneven kitchen execution, and dishes that are overly salty or oily. Several branches are criticized for inconsistent quality and crowded conditions during peak hours. Overall, it is seen as a solid casual option when promotions make it affordable, but service and consistency vary by branch.